graphologist vs specialist

graphologist and specialist both are nouns.

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

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

graphologist: a specialist in inferring character from handwriting
specialist: an expert who is devoted to one occupation or branch of learning

Other hypernyms of graphologist include specialiser, specializer.

graphologist (noun)	specialist (noun)
a specialist in inferring character from handwriting	an expert who is devoted to one occupation or branch of learning
	practices one branch of medicine