diplomate vs medical specialist

diplomate and medical specialist both are nouns.

Word	Noun	Adjective	Verb	Adverb
diplomate	Yes	No	No	No
medical specialist	Yes	No	No	No

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

diplomate: medical specialist whose competence has been certified by a diploma granted by an appropriate professional group
medical specialist: practices one branch of medicine

Other hypernyms of diplomate include specialist.

diplomate (noun)	medical specialist (noun)
medical specialist whose competence has been certified by a diploma granted by an appropriate professional group	practices one branch of medicine