SEAT vs steam engine

SEAT

noun

  • Single engine air tanker. 

  • An automobile from Sociedad Española de Automóviles de Turismo 

name

  • Sociedad Española de Automóviles de Turismo, a Spanish automobile manufacturer. 

steam engine

noun

  • A steam locomotive. 

  • A piston engine driven by steam (as contrasted, for example, with a steam turbine). 

  • Any heat engine that uses steam as its primary working fluid to do mechanical work. 

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