soapy vs buttery

soapy is not a noun while buttery is a noun.

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

As adjectives, soapy and buttery are synonyms defined as:

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

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

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

soapy (adjective)	buttery (adjective)
resembling or having the qualities of soap	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