seating room vs seating

seating room and seating both are nouns.

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

As nouns, seating room and seating are synonyms defined as:

seating room and seating: an area that includes places where several people can sit

Other synonyms of seating room include seating area, seats.

seating room (noun)	seating (noun)
an area that includes places where several people can sit	the service of ushering people to their seats
	an area that includes places where several people can sit