craze vs key up

craze

verb
  • To be crazed, or to act or appear as one that is crazed; to rave; to become insane. 

  • To derange the intellect of; to render insane. 

  • To crack, as the glazing of porcelain or pottery. 

noun
  • A strong habitual desire or fancy. 

  • A temporary passion or infatuation, as for some new amusement, pursuit, or fashion; a fad. 

  • A crack in the glaze or enamel caused by exposure of the pottery to great or irregular heat. 

key up

verb
  • To raise the intensity, excitement, tension, etc., of. 

  • To produce nervous tension in. 

  • To raise the pitch of. 

  • To raise (the whole ring of an arch) off its centering, by driving in the keystone forcibly. 

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