brownify vs stew

brownify

verb
  • To make or become more brown. 

  • To cause to contain more racially 'brown' people, elements, or culture. 

  • To become brown due to increased levels of humic material. 

stew

verb
  • To cook (food) by slowly boiling or simmering. 

  • To brew (tea) for too long, so that the flavour becomes too strong. 

  • To suffer under uncomfortably hot conditions. 

  • To be in a state of elevated anxiety or anger. 

noun
  • A heated bath-room or steam-room; also, a hot bath. 

  • A dish cooked by stewing. 

  • A state of agitated excitement, worry, and/or confusion. 

  • A steward or stewardess on an airplane or boat. 

  • A pool in which fish are kept in preparation for eating. 

  • An artificial bed of oysters. 

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