forage vs rustle

forage and rustle both are nouns.

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

As verbs, rustle is a hyponym of forage; that is, rustle is a word with a more specific, narrower meaning than forage:

forage (noun)	rustle (noun)
the act of searching for food and provisions	a light noise, like the noise of silk clothing or leaves blowing in the wind
bulky food like grass or hay for browsing or grazing horses or cattle

forage (verb)	rustle (verb)
wander and feed	make a dry crackling sound
collect or look around for (food)	take illegally
	forage food