podiatrist vs specialist

podiatrist and specialist both are nouns.

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

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

Other hypernyms of podiatrist include medical specialist.

podiatrist (noun)	specialist (noun)
a specialist in care for the feet	an expert who is devoted to one occupation or branch of learning
	practices one branch of medicine