room vs opportunity

room and opportunity both are nouns.

Word	Noun	Adjective	Verb	Adverb
room	Yes	No	Yes	No
opportunity	Yes	No	No	No

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

Other hypernyms of room include chance.

room (noun)	opportunity (noun)
an area within a building enclosed by walls and floor and ceiling	a possibility due to a favorable combination of circumstances
the people who are present in a room
space for movement
opportunity for

room (verb)	opportunity (verb)
live and take one's meals at or in