butterfly valve vs squish

butterfly valve

noun
  • A valve with a disk-shaped mechanism which can be used for isolating or regulating flow. 

squish

noun
  • The sound or action of something, especially something moist, being squeezed or crushed. 

  • A political moderate. 

  • A non-romantic and generally non-sexual infatuation with somebody one is not dating, or the object of that infatuation; a platonic crush. 

verb
  • To squeeze, compress, or crush (especially something moist). 

  • To be compressed or squeezed. 

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