scavenge vs gather

scavenge is not a noun while gather is a noun.

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

As verbs, gather is a hypernym of scavenge; that is, gather is a word with a broader meaning than scavenge:

Other hypernyms of scavenge include collect, garner, pull together.

scavenge (noun)	gather (noun)
	the act of gathering something
	sewing consisting of small folds or puckers made by pulling tight a thread in a line of stitching

scavenge (verb)	gather (verb)
remove unwanted substances from	increase in amount by collecting or gathering
feed on carrion or refuse	increase or develop
clean refuse from	conclude from evidence
collect discarded material	assemble or get together
	draw together into folds or puckers
	look for (food) in nature
	draw and bring closer
	collect in one place
	get people together