funeral-residence vs dead room

funeral-residence and dead room both are nouns.

Word	Noun	Adjective	Verb	Adverb
funeral-residence	Yes	No	No	No
dead room	Yes	No	No	No

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

funeral-residence: a mortuary where those who knew the deceased can come to pay their last respects
dead room: a building (or room) where dead bodies are kept before burial or cremation

Other hypernyms of funeral-residence include morgue, mortuary.

funeral-residence (noun)	dead room (noun)
a mortuary where those who knew the deceased can come to pay their last respects	a building (or room) where dead bodies are kept before burial or cremation