buttery vs smarmy

buttery is a noun but smarmy is not a noun.

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

As adjectives, buttery and smarmy are synonyms defined as:

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

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

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

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