vegetative vs physiology

vegetative is not a noun while physiology is a noun.

Word	Noun	Adjective	Verb	Adverb
vegetative	No	Yes	No	No
physiology	Yes	No	No	No

vegetative (noun)	physiology (noun)
	processes and functions of an organism
	the branch of the biological sciences dealing with the functioning of organisms

vegetative (adjective)	physiology (adjective)
composed of vegetation or plants
of or relating to an activity that is passive and monotonous
(of reproduction) characterized by asexual processes
relating to involuntary bodily functions