medical specialty vs disconfirming

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

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

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

medical specialty (adjective)	disconfirming (adjective)
	not indicating the presence of microorganisms or disease or a specific condition
	establishing as invalid or untrue