Don't use the term 'object' in a generic sense

Since Typescript has a specific meaning of object, use 'entity' instead.

Author: sandersn

pages/Declaration Merging.md

@@ -13,7 +13,7 @@ Declaration merging is not limited to just two declarations, as any number of de
 
 # Basic Concepts
 
-In TypeScript, a declaration creates objects in at least one of three groups: namespace, type, or value.
+In TypeScript, a declaration creates entities in at least one of three groups: namespace, type, or value.
 Namespace-creating declarations create a namespace, which contains names that are accessed using a dotted notation.
 Type-creating declarations do just that: they create a type that is visible with the declared shape and bound to the given name.
 Lastly, value-creating declarations create values that are visible in the output JavaScript.