fabricate vs vamp

fabricate is not a noun while vamp is a noun.

Word	Noun	Adjective	Verb	Adverb
fabricate	No	No	Yes	No
vamp	Yes	No	Yes	No

As verbs, vamp is a hyponym of fabricate; that is, vamp is a word with a more specific, narrower meaning than fabricate:

Other hyponyms of fabricate include mythologise, mythologize, confabulate, concoct, trump up, spin, vamp up.

fabricate (noun)	vamp (noun)
	piece of leather forming the front part of the upper of a shoe
	an improvised musical accompaniment
	a seductive woman who uses her sex appeal to exploit men

fabricate (verb)	vamp (verb)
concoct something artificial or untrue	provide (a shoe) with a new vamp
put together out of artificial or natural components or parts	act seductively with (someone)
	piece (something old) with a new part
	make up