orthopedist vs specialist

orthopedist and specialist both are nouns.

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

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

orthopedist: a specialist in correcting deformities of the skeletal system (especially in children)
specialist: practices one branch of medicine

Other hypernyms of orthopedist include medical specialist.

orthopedist (noun)	specialist (noun)
a specialist in correcting deformities of the skeletal system (especially in children)	an expert who is devoted to one occupation or branch of learning
	practices one branch of medicine