rustle vs whispering

rustle and whispering both are nouns.

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

As nouns, rustle and whispering are synonyms defined as:

rustle and whispering: a light noise, like the noise of silk clothing or leaves blowing in the wind

Other synonyms of rustle include rustling, whisper.

rustle (noun)	whispering (noun)
a light noise, like the noise of silk clothing or leaves blowing in the wind	speaking softly without vibration of the vocal cords
	a light noise, like the noise of silk clothing or leaves blowing in the wind

rustle (adjective)	whispering (adjective)
	making a low continuous indistinct sound