Conjunction

A conjunction connects words, phrases, and clauses.

Coordinate conjunctions connect words, phrases, and clauses of equal value: and, or, nor, but (and sometimes for).

Example: The dog and the cat are hungry.

Correlative conjunctions occur in pairs: both-and, either-or, neither-nor, not only-but also.

Example : Both the fish and the snake are thirsty.

Subordinate conjunctions connect unequal clauses (dependent clauses with independent clauses). They include: after, although, as, because, before, if, since, than, though, unless, until, when, where, while.

Example : After they ate, they had dessert.