epidemic vs medical specialty

epidemic and medical specialty both are nouns.

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

epidemic (noun)	medical specialty (noun)
a widespread outbreak of an infectious disease; many people are infected at the same time	the branches of medical science that deal with nonsurgical techniques

epidemic (adjective)	medical specialty (adjective)
(especially of medicine) of disease or anything resembling a disease; attacking or affecting many individuals in a community or a population simultaneously