rustle vs scrounge

rustle is a noun but scrounge is not a noun.

Word	Noun	Adjective	Verb	Adverb
rustle	Yes	No	Yes	No
scrounge	No	No	Yes	No

As verbs, scrounge is a hypernym of rustle; that is, scrounge is a word with a broader meaning than rustle:

Other hypernyms of rustle include forage.

rustle (noun)	scrounge (noun)
a light noise, like the noise of silk clothing or leaves blowing in the wind

rustle (verb)	scrounge (verb)
make a dry crackling sound	collect or look around for (food)
take illegally	obtain or seek to obtain by cadging or wheedling
forage food