rustling vs whispering

rustling and whispering both are nouns.

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

As nouns, rustling and whispering are synonyms defined as:

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

Other synonyms of rustling include rustle, whisper.

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

rustling (adjective)	whispering (adjective)
characterized by soft sounds	making a low continuous indistinct sound