In traditional English grammar, the types of conjunctions are coordinating conjunctions (which connect two words, sentences or phrases of equal grammatical status), subordinating conjunctions (which subordinate a word or phrase to another) and correlative conjunctions (which come in pairs).
Spanish grammarians often classify conjunctions differently, referring to conjunciones aditivas (additive conjunctions such as "and" or y), conjunciones adversativas (contrastive conjunctions such as "but" or pero and "nevertheless" or sin embargo), conjunciones causales (causal conjunctions such as "because" or porque), and conjunciones temporales (temporal conjunctions such as "then" or entonces).

