flaunt vs show off

flaunt is a noun but show off is not a noun.

Word	Noun	Adjective	Verb	Adverb
flaunt	Yes	No	Yes	No
show off	No	No	Yes	No

As verbs, flaunt and show off are synonyms defined as:

flaunt and show off: display proudly; act ostentatiously or pretentiously

Other synonyms of flaunt include flash, ostentate, swank.

flaunt (noun)	show off (noun)
the act of displaying something ostentatiously

flaunt (verb)	show off (verb)
display proudly; act ostentatiously or pretentiously	display proudly; act ostentatiously or pretentiously