scavenger vs scavenge

scavenger is a noun but scavenge is not a noun.

Word	Noun	Adjective	Verb	Adverb
scavenger	Yes	No	No	No
scavenge	No	No	Yes	No

scavenger (noun)	scavenge (noun)
any animal that feeds on refuse and other decaying organic matter
someone who collects things that have been discarded by others
a chemical agent that is added to a chemical mixture to counteract the effects of impurities

scavenger (verb)	scavenge (verb)
	remove unwanted substances from
	feed on carrion or refuse
	clean refuse from
	collect discarded material