oleaginous vs buttery

oleaginous is not a noun while buttery is a noun.

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

As adjectives, oleaginous and buttery are synonyms defined as:

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

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

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

oleaginous (adjective)	buttery (adjective)
containing an unusual amount of grease or oil	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