chamber vs hotel room

chamber and hotel room both are nouns.

Word	Noun	Adjective	Verb	Adverb
chamber	Yes	No	Yes	No
hotel room	Yes	No	No	No

As nouns, hotel room is a hyponym of chamber; that is, hotel room is a word with a more specific, narrower meaning than chamber:

chamber (noun)	hotel room (noun)
a natural or artificial enclosed space	a bedroom (usually with bath) in a hotel
a room used primarily for sleeping
a room where a judge transacts business
an enclosed volume in the body
a deliberative or legislative or administrative or judicial assembly

chamber (verb)	hotel room (verb)
place in a chamber