inflatable vs ketch

inflatable

noun
  • A boat or dinghy that may be inflated when needed. 

  • Any other structure, artwork etc. that is inflated. 

adj
  • Able to be inflated or blown up. 

ketch

noun
  • A fore-and-aft rigged sailing vessel with two masts, main and mizzen, the mizzen being stepped forward of the rudder post. 

  • A hangman. 

verb
  • To hang. 

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