riffle vs rippling

riffle and rippling both are nouns.

Word	Noun	Adjective	Verb	Adverb
riffle	Yes	No	Yes	No
rippling	Yes	No	No	No

As nouns, riffle and rippling are synonyms defined as:

Other synonyms of riffle include ripple, wavelet.

riffle (noun)	rippling (noun)
shuffling by splitting the pack and interweaving the two halves at their corners	a small wave on the surface of a liquid
a small wave on the surface of a liquid

riffle (verb)	rippling (verb)
shuffle (playing cards) by separating the deck into two parts and riffling with the thumbs so the cards intermix
twitch or flutter
stir up (water) so as to form ripples
look through a book or other written material