neurology vs medical specialty

neurology and medical specialty both are nouns.

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

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

neurology: (neurology) the branch of medicine that deals with the nervous system and its disorders
medical specialty: the branches of medical science that deal with nonsurgical techniques

Other hypernyms of neurology include medicine.

neurology (noun)	medical specialty (noun)
the branch of medical science that deals with the nervous system	the branches of medical science that deal with nonsurgical techniques
(neurology) the branch of medicine that deals with the nervous system and its disorders