bon vivant vs gastronome

bon vivant and gastronome both are nouns.

Word	Noun	Adjective	Verb	Adverb
bon vivant	Yes	No	No	No
gastronome	Yes	No	No	No

As nouns, bon vivant and gastronome are synonyms defined as:

bon vivant and gastronome: a person devoted to refined sensuous enjoyment (especially good food and drink)

Other synonyms of bon vivant include epicure, epicurean, foodie, gourmet.

bon vivant (noun)	gastronome (noun)
a person devoted to refined sensuous enjoyment (especially good food and drink)	a person devoted to refined sensuous enjoyment (especially good food and drink)