show-off vs exhibitionist

show-off and exhibitionist both are nouns.

Word	Noun	Adjective	Verb	Adverb
show-off	Yes	No	No	No
exhibitionist	Yes	No	No	No

As nouns, show-off and exhibitionist are synonyms defined as:

show-off and exhibitionist: someone who deliberately behaves in such a way as to attract attention

show-off (noun)	exhibitionist (noun)
someone who deliberately behaves in such a way as to attract attention	someone who deliberately behaves in such a way as to attract attention
	someone with a compulsive desire to expose the genitals