decorator vs specialist

decorator and specialist both are nouns.

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

As nouns, specialist is a hypernym of decorator; that is, specialist is a word with a broader meaning than decorator:

decorator: a person who specializes in interior decoration
specialist: an expert who is devoted to one occupation or branch of learning

Other hypernyms of decorator include specialiser, specializer.

decorator (noun)	specialist (noun)
someone who decorates	an expert who is devoted to one occupation or branch of learning
a person who specializes in interior decoration	practices one branch of medicine