diff --git a/README.md b/README.md
index c2263e8..f7135eb 100644
--- a/README.md
+++ b/README.md
@@ -4,9 +4,9 @@
 
 ```
 defers.defer -> (defer)
-defers.set -> defer -> entity -> entity -> any -> (defer)
-defers.assign -> defer -> entity -> entity -> any -> (defer)
-defers.insert -> defer -> entity -> entity -> any -> (defer)
+defers.set -> defer -> entity -> entity -> component -> (defer)
+defers.assign -> defer -> entity -> entity -> component -> (defer)
+defers.insert -> defer -> entity -> entity -> component -> (defer)
 defers.remove -> defer -> entity -> entity... -> (defer)
 defers.detach -> defer -> entity -> (defer)
 defers.destroy -> defer -> entity -> (defer)
@@ -16,9 +16,9 @@ defers.playback -> defer -> (defer)
 ### Instance `defer`
 
 ```
-defer:set -> entity -> entity -> any -> (defer)
-defer:assign -> entity -> entity -> any -> (defer)
-defer:insert -> entity -> entity -> any -> (defer)
+defer:set -> entity -> entity -> component -> (defer)
+defer:assign -> entity -> entity -> component -> (defer)
+defer:insert -> entity -> entity -> component -> (defer)
 defer:remove -> entity -> entity... -> (defer)
 defer:detach -> entity -> (defer)
 defer:destroy -> entity -> (defer)
@@ -52,19 +52,19 @@ idpool:release -> id -> ()
 registry.entity -> (entity)
 registry.guid -> entity -> (id)
 registry.alive -> entity -> (boolean)
-registry.get -> entity -> entity... -> (any...)
+registry.get -> entity -> entity... -> (component...)
 registry.has -> entity -> entity -> (boolean)
 registry.has_all -> entity -> entity... -> (boolean)
 registry.has_any -> entity -> entity... -> (boolean)
-registry.set -> entity -> entity -> any -> (entity)
-registry.chunk_set -> chunk -> entity -> any -> (integer, integer)
-registry.query_set -> query -> entity -> any -> (integer, integer)
-registry.assign -> entity -> entity -> any -> (boolean)
-registry.chunk_assign -> chunk -> entity -> any -> (integer)
-registry.query_assign -> query -> entity -> any -> (integer)
-registry.insert -> entity -> entity -> any -> (boolean)
-registry.chunk_insert -> chunk -> entity -> any -> (integer)
-registry.query_insert -> query -> entity -> any -> (integer)
+registry.set -> entity -> entity -> component -> (entity)
+registry.chunk_set -> chunk -> entity -> component -> (integer, integer)
+registry.query_set -> query -> entity -> component -> (integer, integer)
+registry.assign -> entity -> entity -> component -> (boolean)
+registry.chunk_assign -> chunk -> entity -> component -> (integer)
+registry.query_assign -> query -> entity -> component -> (integer)
+registry.insert -> entity -> entity -> component -> (boolean)
+registry.chunk_insert -> chunk -> entity -> component -> (integer)
+registry.query_insert -> query -> entity -> component -> (integer)
 registry.remove -> entity -> entity... -> (boolean)
 registry.chunk_remove -> chunk -> entity... -> (integer)
 registry.query_remove -> query -> entity... -> (integer)
@@ -80,7 +80,7 @@ registry.query_exclude -> query -> entity... -> query
 registry.query_execute -> query -> ({execution_state? -> chunk?}, execution_state?)
 registry.chunk -> entity -> entity... -> (chunk)
 registry.chunk_entities -> chunk -> (entity[])
-registry.chunk_components -> chunk -> entity... -> (any[]...)
+registry.chunk_components -> chunk -> entity... -> (component[]...)
 ```
 
 ### Instance `entity`
@@ -88,14 +88,13 @@ registry.chunk_components -> chunk -> entity... -> (any[]...)
 ```
 entity:guid -> (id)
 entity:alive -> (boolean)
-entity:get -> entity... -> (any...)
+entity:get -> entity... -> (component...)
 entity:has -> entity -> (boolean)
 entity:has_all -> entity... -> (boolean)
 entity:has_any -> entity... -> (boolean)
-
-entity:set -> entity -> any -> (entity)
-entity:assign -> entity -> any -> (boolean)
-entity:insert -> entity -> any -> (boolean)
+entity:set -> entity -> component -> (entity)
+entity:assign -> entity -> component -> (boolean)
+entity:insert -> entity -> component -> (boolean)
 entity:remove -> entity... -> (boolean)
 entity:detach -> (entity)
 entity:destroy -> (entity)
@@ -104,13 +103,12 @@ entity:destroy -> (entity)
 ### Instance `query`
 
 ```
-query:set -> entity -> any -> (integer, integer)
-query:assign -> entity -> any -> (integer)
-query:insert -> entity -> any -> (integer)
+query:set -> entity -> component -> (integer, integer)
+query:assign -> entity -> component -> (integer)
+query:insert -> entity -> component -> (integer)
 query:remove -> entity... -> (integer)
 query:detach -> (integer)
 query:destroy -> (integer)
-
 query:include -> entity... -> query
 query:exclude -> entity... -> query
 query:execute -> ({execution_state? -> chunk?}, execution_state?)
@@ -119,24 +117,23 @@ query:execute -> ({execution_state? -> chunk?}, execution_state?)
 ### Instance `chunk`
 
 ```
-chunk:set -> entity -> any -> (integer, integer)
-chunk:assign -> entity -> any -> (integer)
-chunk:insert -> entity -> any -> (integer)
+chunk:set -> entity -> component -> (integer, integer)
+chunk:assign -> entity -> component -> (integer)
+chunk:insert -> entity -> component -> (integer)
 chunk:remove -> entity... -> (integer)
 chunk:detach -> (integer)
 chunk:destroy -> (integer)
-
 chunk:entities -> (entity[])
-chunk:components -> entity... -> (any[]...)
+chunk:components -> entity... -> (component[]...)
 ```
 
 ## Module `singles`
 
 ```
-singles.single -> any -> (entity)
-singles.set -> entity -> any -> (entity)
-singles.get -> entity -> (any)
+singles.single -> component -> (entity)
+singles.get -> entity -> (component)
 singles.has -> entity -> (boolean)
+singles.set -> entity -> component -> (entity)
 ```
 
 ## Module `vectors`
diff --git a/develop/unbench/evolved_unbench.lua b/develop/unbench/evolved_unbench.lua
index 80d484c..6c2aabd 100644
--- a/develop/unbench/evolved_unbench.lua
+++ b/develop/unbench/evolved_unbench.lua
@@ -132,7 +132,7 @@ end)
 ---@param A evolved.query
 ---@param B evolved.query
 common.describe('Entity Cycle (Simple)', function(a, b, A, B)
-    ---@type any[]
+    ---@type evolved.component[]
     local to_create = {}
 
     for chunk in A:execute() do
@@ -178,7 +178,7 @@ end)
 ---@param A evolved.query
 ---@param B evolved.query
 common.describe('Entity Cycle (Batched)', function(a, b, A, B)
-    ---@type any[]
+    ---@type evolved.component[]
     local to_create = {}
 
     for chunk in A:execute() do
diff --git a/evolved/defers.lua b/evolved/defers.lua
index b84f7be..6e04f25 100644
--- a/evolved/defers.lua
+++ b/evolved/defers.lua
@@ -96,7 +96,7 @@ end
 ---@param defer evolved.defer
 ---@param entity evolved.entity
 ---@param fragment evolved.entity
----@param component any
+---@param component evolved.component
 ---@return evolved.defer
 function defers.set(defer, entity, fragment, component)
     local operations = defer.operations
@@ -114,7 +114,7 @@ end
 ---@param defer evolved.defer
 ---@param entity evolved.entity
 ---@param fragment evolved.entity
----@param component any
+---@param component evolved.component
 ---@return evolved.defer
 function defers.assign(defer, entity, fragment, component)
     local operations = defer.operations
@@ -132,7 +132,7 @@ end
 ---@param defer evolved.defer
 ---@param entity evolved.entity
 ---@param fragment evolved.entity
----@param component any
+---@param component evolved.component
 ---@return evolved.defer
 function defers.insert(defer, entity, fragment, component)
     local operations = defer.operations
diff --git a/evolved/registry.lua b/evolved/registry.lua
index 2106ed1..af1d7e5 100644
--- a/evolved/registry.lua
+++ b/evolved/registry.lua
@@ -10,6 +10,8 @@ local registry = {}
 ---
 ---
 
+---@alias evolved.component any
+
 ---@alias evolved.execution_stack evolved.chunk[]
 ---@alias evolved.execution_state [table<evolved.entity, boolean>, integer, evolved.execution_stack]
 ---@alias evolved.execution_iterator fun(execute_state: evolved.execution_state?): evolved.chunk?
@@ -53,7 +55,7 @@ evolved_query_mt.__index = evolved_query_mt
 ---@field package __fragment evolved.entity
 ---@field package __children evolved.chunk[]
 ---@field package __entities evolved.entity[]
----@field package __components table<evolved.entity, any[]>
+---@field package __components table<evolved.entity, evolved.component[]>
 ---@field package __with_fragment_cache table<evolved.entity, evolved.chunk>
 ---@field package __without_fragment_cache table<evolved.entity, evolved.chunk>
 
@@ -450,7 +452,7 @@ end
 
 ---@param entity evolved.entity
 ---@param ... evolved.entity fragments
----@return any ... components
+---@return evolved.component ... components
 ---@nodiscard
 function registry.get(entity, ...)
     local chunk = entity.__chunk
@@ -522,7 +524,7 @@ end
 
 ---@param entity evolved.entity
 ---@param fragment evolved.entity
----@param component any
+---@param component evolved.component
 ---@return evolved.entity
 function registry.set(entity, fragment, component)
     component = component == nil and true or component
@@ -572,7 +574,7 @@ end
 
 ---@param chunk evolved.chunk
 ---@param fragment evolved.entity
----@param component any
+---@param component evolved.component
 ---@return integer assigned_count
 ---@return integer inserted_count
 function registry.chunk_set(chunk, fragment, component)
@@ -587,7 +589,7 @@ end
 
 ---@param query evolved.query
 ---@param fragment evolved.entity
----@param component any
+---@param component evolved.component
 ---@return integer assigned_count
 ---@return integer inserted_count
 function registry.query_set(query, fragment, component)
@@ -624,7 +626,7 @@ end
 
 ---@param entity evolved.entity
 ---@param fragment evolved.entity
----@param component any
+---@param component evolved.component
 ---@return boolean is_assigned
 function registry.assign(entity, fragment, component)
     component = component == nil and true or component
@@ -648,7 +650,7 @@ end
 
 ---@param chunk evolved.chunk
 ---@param fragment evolved.entity
----@param component any
+---@param component evolved.component
 ---@return integer assigned_count
 function registry.chunk_assign(chunk, fragment, component)
     component = component == nil and true or component
@@ -670,7 +672,7 @@ end
 
 ---@param query evolved.query
 ---@param fragment evolved.entity
----@param component any
+---@param component evolved.component
 ---@return integer assigned_count
 function registry.query_assign(query, fragment, component)
     local chunks = __execution_stack_acquire()
@@ -692,7 +694,7 @@ end
 
 ---@param entity evolved.entity
 ---@param fragment evolved.entity
----@param component any
+---@param component evolved.component
 ---@return boolean is_inserted
 function registry.insert(entity, fragment, component)
     component = component == nil and true or component
@@ -740,7 +742,7 @@ end
 
 ---@param chunk evolved.chunk
 ---@param fragment evolved.entity
----@param component any
+---@param component evolved.component
 ---@return integer inserted_count
 function registry.chunk_insert(chunk, fragment, component)
     component = component == nil and true or component
@@ -818,7 +820,7 @@ end
 
 ---@param query evolved.query
 ---@param fragment evolved.entity
----@param component any
+---@param component evolved.component
 ---@return integer inserted_count
 function registry.query_insert(query, fragment, component)
     local chunks = __execution_stack_acquire()
@@ -1282,7 +1284,7 @@ end
 
 ---@param chunk evolved.chunk
 ---@param ... evolved.entity fragments
----@return any[] ... components
+---@return evolved.component[] ... components
 ---@nodiscard
 function registry.chunk_components(chunk, ...)
     local components = chunk.__components
diff --git a/evolved/singles.lua b/evolved/singles.lua
index 7c12701..db268a6 100644
--- a/evolved/singles.lua
+++ b/evolved/singles.lua
@@ -3,7 +3,7 @@ local registry = require 'evolved.registry'
 ---@class evolved.singles
 local singles = {}
 
----@param component any
+---@param component evolved.component
 ---@return evolved.entity
 ---@nodiscard
 function singles.single(component)
@@ -12,14 +12,7 @@ function singles.single(component)
 end
 
 ---@param single evolved.entity
----@param component any
----@return evolved.entity
-function singles.set(single, component)
-    return single:set(single, component)
-end
-
----@param single evolved.entity
----@return any
+---@return evolved.component
 ---@nodiscard
 function singles.get(single)
     return single:get(single)
@@ -32,4 +25,11 @@ function singles.has(single)
     return single:has(single)
 end
 
+---@param single evolved.entity
+---@param component evolved.component
+---@return evolved.entity
+function singles.set(single, component)
+    return single:set(single, component)
+end
+
 return singles