hydrofoil vs thwart

hydrofoil

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

  • A vessel equipped with such a device. 

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

thwart

noun
  • A brace, perpendicular to the keel, that helps maintain the beam (“breadth”) of a marine vessel against external water pressure and that may serve to support the rail. 

  • A seat across a boat on which a rower may sit. 

  • An act of thwarting; something which thwarts; a hindrance, an obstacle. 

adj
  • Placed or situated across something else; cross, oblique, transverse. 

verb
  • To cause to fail; to frustrate, to prevent. 

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