dead room vs edifice

dead room and edifice both are nouns.

Word	Noun	Adjective	Verb	Adverb
dead room	Yes	No	No	No
edifice	Yes	No	No	No

As nouns, edifice is a hypernym of dead room; that is, edifice is a word with a broader meaning than dead room:

dead room: a building (or room) where dead bodies are kept before burial or cremation
edifice: a structure that has a roof and walls and stands more or less permanently in one place

Other hypernyms of dead room include building.

dead room (noun)	edifice (noun)
a building (or room) where dead bodies are kept before burial or cremation	a structure that has a roof and walls and stands more or less permanently in one place