graphic designer vs specialist

graphic designer and specialist both are nouns.

Word	Noun	Adjective	Verb	Adverb
graphic designer	Yes	No	No	No
specialist	Yes	No	No	No

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

graphic designer: someone who specializes in graphic design
specialist: an expert who is devoted to one occupation or branch of learning

Other hypernyms of graphic designer include specialiser, specializer.

graphic designer (noun)	specialist (noun)
someone who specializes in graphic design	an expert who is devoted to one occupation or branch of learning
	practices one branch of medicine