exterminate vs exterminator

exterminate is not a noun while exterminator is a noun.

Word	Noun	Adjective	Verb	Adverb
exterminate	No	No	Yes	No
exterminator	Yes	No	No	No

exterminate (noun)	exterminator (noun)
	someone who exterminates (especially someone whose occupation is the extermination of troublesome rodents and insects)

exterminate (verb)	exterminator (verb)
kill en masse; kill on a large scale; kill many
destroy completely, as if down to the roots