urology vs medical specialty

urology and medical specialty both are nouns.

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

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

urology: the branch of medicine that deals with the diagnosis and treatment of disorders of the urinary tract or urogenital system
medical specialty: the branches of medical science that deal with nonsurgical techniques

Other hypernyms of urology include medicine.

urology (noun)	medical specialty (noun)
the branch of medicine that deals with the diagnosis and treatment of disorders of the urinary tract or urogenital system	the branches of medical science that deal with nonsurgical techniques