medical specialty vs low-level radioactive waste

medical specialty and low-level radioactive waste both are nouns.

Word	Noun	Adjective	Verb	Adverb
medical specialty	Yes	No	No	No
low-level radioactive waste	Yes	No	No	No

medical specialty (noun)	low-level radioactive waste (noun)
the branches of medical science that deal with nonsurgical techniques	(medicine) radioactive waste consisting of objects that have been briefly exposed to radioactivity (as in certain medical tests)