zip vs zip fastener

zip and zip fastener both are nouns.

Word	Noun	Adjective	Verb	Adverb
zip	Yes	No	Yes	No
zip fastener	Yes	No	No	No

As nouns, zip and zip fastener are synonyms defined as:

zip and zip fastener: a fastener for locking together two toothed edges by means of a sliding tab

Other synonyms of zip include slide fastener, zipper.

zip (noun)	zip fastener (noun)
a fastener for locking together two toothed edges by means of a sliding tab	a fastener for locking together two toothed edges by means of a sliding tab
forceful exertion
a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential

zip (verb)	zip fastener (verb)
close with a zipper
move very fast