What is a conjunction?

Definition
	A conjunction is a word that
	syntactically links words or larger constituents, and expresses a semantic relationship between them.
	A conjunction is positionally fixed relative to one or more of the elements related by it, thus distinguishing it from constituents such as English conjunctive adverbs.

Examples (English)
	Coordinating conjunctions and or but Subordinating conjunctions because when unless

Kinds
	Here are some kinds of conjunctions:
	What is a coordinating conjunction? What is a subordinating conjunction?

Generic
	A conjunction is a kind of
	What is a word? What is a relator?