fulsome vs buttery

fulsome is not a noun while buttery is a noun.

Word	Noun	Adjective	Verb	Adverb
fulsome	No	Yes	No	No
buttery	Yes	Yes	No	No

As adjectives, fulsome and buttery are synonyms defined as:

fulsome and buttery: unpleasantly and excessively suave or ingratiating in manner or speech

Other synonyms of fulsome include oily, oleaginous, smarmy, soapy, unctuous.

fulsome (noun)	buttery (noun)
	a teashop where students in British universities can purchase light meals
	a small storeroom for storing foods or wines

fulsome (adjective)	buttery (adjective)
unpleasantly and excessively suave or ingratiating in manner or speech	resembling or containing or spread with butter
	unpleasantly and excessively suave or ingratiating in manner or speech