medical specialty vs topical

medical specialty is a noun but topical is not a noun.

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

medical specialty (noun)	topical (noun)
the branches of medical science that deal with nonsurgical techniques

medical specialty (adjective)	topical (adjective)
	of or relating to or arranged by topics
	of interest at the present time
	pertaining to the surface of a body part