medical specialty vs visualize

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

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

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

medical specialty (verb)	visualize (verb)
	make visible
	imagine; conceive of; see in one's mind
	form a mental picture of something that is invisible or abstract
	view the outline of by means of an X-ray