invasive vs medical specialty

invasive is not a noun while medical specialty is a noun.

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

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

invasive (adjective)	medical specialty (adjective)
marked by a tendency to spread especially into healthy tissue
relating to a technique in which the body is entered by puncture or incision
gradually intrusive without right or permission
involving invasion or aggressive attack