otology vs medical specialty

otology and medical specialty both are nouns.

Word	Noun	Adjective	Verb	Adverb
otology	Yes	No	No	No
medical specialty	Yes	No	No	No

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

otology: the branch of medicine concerned with the ear
medical specialty: the branches of medical science that deal with nonsurgical techniques

Other hypernyms of otology include medicine.

otology (noun)	medical specialty (noun)
the branch of medicine concerned with the ear	the branches of medical science that deal with nonsurgical techniques