riffle vs rippling

riffle

noun
  • A succession of small waves. 

  • A swift, shallow part of a stream causing broken water. 

  • A quick skim through the pages of a book. 

  • A trough or sluice having cleats, grooves, or steps across the bottom for holding quicksilver and catching particles of gold when auriferous earth is washed. Also one of the cleats, grooves or steps in such trough. 

  • In seal engraving, a small metal disc at the end of a tool. 

  • The act of shuffling cards; the sound made while shuffling cards. 

verb
  • To ruffle with a rippling action. 

  • To skim or flick through the pages of a book. 

  • To flow over a swift, shallow part of a stream. 

  • To shuffle playing cards by separating the deck in two and sliding the thumbs along the edges of the cards to mix the two parts. 

  • To leaf through rapidly. 

  • To idly manipulate objects with the fingers. 

  • To prepare samples of material using a riffler. 

rippling

noun
  • A motion or sound that ripples. 

adj
  • Moving in a chaotic, undulating fashion, as in a flow of water or a flag blowing in the wind. 

How often have the words riffle and rippling occurred in a corpus of books? (source: Google Ngram Viewer )