inflatable vs steamboat

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. 

steamboat

noun
  • A boat or vessel propelled by steam power. 

  • Hot pot (Chinese dish). 

verb
  • To travel by steamboat. 

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