radiation therapy vs medical specialty

radiation therapy and medical specialty both are nouns.

Word	Noun	Adjective	Verb	Adverb
radiation therapy	Yes	No	No	No
medical specialty	Yes	No	No	No

radiation therapy (noun)	medical specialty (noun)
(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance	the branches of medical science that deal with nonsurgical techniques