neurological vs neurology

neurological is not a noun while neurology is a noun.

Word	Noun	Adjective	Verb	Adverb
neurological	No	Yes	No	No
neurology	Yes	No	No	No

neurological (noun)	neurology (noun)
	the branch of medical science that deals with the nervous system
	(neurology) the branch of medicine that deals with the nervous system and its disorders

neurological (adjective)	neurology (adjective)
of or relating to or used in or practicing neurology