hydrofoil vs seaplane

hydrofoil

noun
  • A vessel equipped with such a device. 

  • A wing attached to the hull of a ship that raises it out of the water when travelling at speed and thus reduces drag. 

verb
  • To operate or use or ride atop a hydrofoil wing on a hull so equipped. 

seaplane

noun
  • Any aircraft capable of taking off from, and alighting on the surface of water. 

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