inflatable vs scow

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. 

scow

noun
  • A large flat-bottomed boat, having broad, square ends. 

verb
  • To transport in a scow. 

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