cognoscente vs connoisseur

cognoscente and connoisseur both are nouns.

Word	Noun	Adjective	Verb	Adverb
cognoscente	Yes	No	No	No
connoisseur	Yes	No	No	No

As nouns, cognoscente and connoisseur are synonyms defined as:

cognoscente and connoisseur: an expert able to appreciate a field; especially in the fine arts

cognoscente (noun)	connoisseur (noun)
an expert able to appreciate a field; especially in the fine arts	an expert able to appreciate a field; especially in the fine arts