activator vs activate

activator is a noun but activate is not a noun.

Word	Noun	Adjective	Verb	Adverb
activator	Yes	No	No	No
activate	No	No	Yes	No

activator (noun)	activate (noun)
(biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription

activator (verb)	activate (verb)
	make active or more active
	make (substances) radioactive
	aerate (sewage) so as to favor the growth of organisms that decompose organic matter
	make more adsorptive
	put in motion or move to act