buttery vs tearoom

buttery and tearoom both are nouns.

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

As nouns, tearoom is a hypernym of buttery; that is, tearoom is a word with a broader meaning than buttery:

buttery: a teashop where students in British universities can purchase light meals
tearoom: a restaurant where tea and light meals are available

Other hypernyms of buttery include tea parlor, tea parlour, teahouse, teashop.

buttery (noun)	tearoom (noun)
a teashop where students in British universities can purchase light meals	a restaurant where tea and light meals are available
a small storeroom for storing foods or wines

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