pitter-patter vs spatter

pitter-patter

noun
  • A soft, percussive sound, as of tiny feet, or of rain on a rooftop. 

spatter

noun
  • The sound of droplets hitting a surface. 

  • A spray or shower of droplets hitting a surface. 

  • A spot or spots of a substance spattered on a surface. 

  • A burst or series of sounds resembling the sound of droplets hitting a surface. 

  • A collection of objects scattered like droplets splashed onto a surface. 

verb
  • To cover, or lie upon (something) by having been scattered, as if by splashing. 

  • To send out or disperse (something) as if in droplets. 

  • To send out small droplets; to splash in small droplets (on or against something). 

  • To splash (someone or something) with small droplets. 

  • To distribute (a liquid) by sprinkling; to sprinkle around. 

How often have the words pitter-patter and spatter occurred in a corpus of books? (source: Google Ngram Viewer )