Conjunctions are words that link other words, phrases, and clauses together.
There are three main kinds of conjunctions: coordinating conjunctions, correlative conjunctions, and subordinating conjunctions.
Coordinating conjunctions are words like but, and, or, yet, and so. They join together two parts of a sentence that have equal grammatical rank.
Correlative conjunctions are pairs of conjunctions like either/or, neither/nor, and not only/but also.
Subordinating conjunctions join independent and dependent clauses. Subordinating conjunctions can show a cause and effect or a contrasting relationship.