travel rapidly vs zip

travel rapidly is not a noun while zip is a noun.

Word	Noun	Adjective	Verb	Adverb
travel rapidly	No	No	Yes	No
zip	Yes	No	Yes	No

As verbs, travel rapidly and zip are synonyms defined as:

Other synonyms of travel rapidly include hurry, speed.

travel rapidly (noun)	zip (noun)
	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

travel rapidly (verb)	zip (verb)
move very fast	close with a zipper
	move very fast