room vs room light

room and room light both are nouns.

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

room (noun)	room light (noun)
an area within a building enclosed by walls and floor and ceiling	light that provides general illumination for a room
the people who are present in a room
space for movement
opportunity for

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