decorator vs room decorator

decorator and room decorator both are nouns.

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

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

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

Other synonyms of decorator include house decorator, interior decorator.

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