room decorator vs decorator

room decorator and decorator both are nouns.

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

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

room decorator and decorator: a person who specializes in interior decoration

Other synonyms of room decorator include house decorator, interior decorator.

room decorator (noun)	decorator (noun)
a person who specializes in interior decoration	someone who decorates
	a person who specializes in interior decoration