Conjunctions

A conjunction is a word that "joins". A conjunction joins two parts of a sentence.
Here are some example conjunctions:

Coordinating Conjunctions	Subordinating Conjunctions
and, but, or, nor, for, yet, so	although, because, since, unless

We can consider conjunctions from three aspects.

Form

Conjunctions have three basic forms:

Single Word
for example: and, but, because, although
Compound (often ending with as or that)
for example: provided that, as long as, in order that
Correlative (surrounding an adverb or adjective)
for example: so...that

Conjunctions have two basic functions or "jobs":

Coordinating conjunctions are used to join two parts of a sentence that are grammatically equal. The two parts may be single words or clauses, for example:
- Jack and Jill went up the hill.
- The water was warm, but I didn't go swimming.
Subordinating conjunctions are used to join a subordinate dependent clause to a main clause, for example:
- I went swimming although it was cold.

Coordinating conjunctions always come between the words or clauses that they join.
Subordinating conjunctions usually come at the beginning of the subordinate clause.