<P> In grammar , a conjunction ( abbreviated CONJ or CNJ ) is a part of speech that connects words , phrases , or clauses that are called the conjuncts of the conjoining construction . The term discourse marker is mostly used for conjunctions joining sentences . This definition may overlap with that of other parts of speech , so what constitutes a `` conjunction '' must be defined for each language . In English a given word may have several senses , being either a preposition or a conjunction depending on the syntax of the sentence ( for example , `` after '' being a preposition in `` he left after the fight '' versus it being a conjunction in `` he left after they fought '' ) . In general , a conjunction is an invariable ( non inflected ) grammatical particle and it may or may not stand between the items conjoined . </P>
what part of speech connects words or groups of words examples are for and nor but or yet and so
conjunction