CONJUNCTIONS

Joining words used with words, phrases or sentences.


CO-ORDINATING CONJUNCTIONS
and but or nor
When these are used to join sentences, they form compound sentences.


SUBORDINATING CONJUNCTIONS
when, whenever, where, wherever, while, after, before, that, if, unless, in spite of the fact that, because, for, since, once, as, so that.
When these are used to join sentences, they form complex sentences