rippling vs swirling

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. 

swirling

noun
  • A pattern or motion that swirls. 

adj
  • that swirls 

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