craze vs something on the brain

craze

verb
  • To derange the intellect of; to render insane. 

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

something on the brain

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