room vs parking

room and parking both are nouns.

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

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

room (noun)	parking (noun)
an area within a building enclosed by walls and floor and ceiling	the act of maneuvering a vehicle into a location where it can be left temporarily
the people who are present in a room	space in which vehicles can be parked
space for movement
opportunity for

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