hydrofoil vs spoil

hydrofoil

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

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. 

spoil

verb
  • To reduce the lift generated by an airplane or wing by deflecting air upwards, usually with a spoiler. 

  • To ruin the character of, by overindulgence; to coddle or pamper to excess. 

  • To reveal the ending or major events of (a story etc.); to ruin (a surprise) by exposing it ahead of time. 

  • To render (a ballot paper) invalid by deliberately defacing it. 

  • Of food, to become bad, sour or rancid; to decay. 

  • To ruin; to damage (something) in some way making it unfit for use. 

noun
  • Material (such as rock or earth) removed in the course of an excavation, or in mining or dredging. Tailings. Such material could be utilised somewhere else. 

  • Plunder taken from an enemy or victim. 

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