gastronome vs bon vivant

gastronome and bon vivant both are nouns.

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

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

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

Other synonyms of gastronome include epicure, epicurean, foodie, gourmet.

gastronome (noun)	bon vivant (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)