khat vs quat

khat

noun
  • A shrub, Catha edulis, whose leaves are used as a mild stimulant when chewed or brewed as tea; also a drug produced from this plant. 

quat

noun
  • A quaternary ammonium cation or compound. 

verb
  • To relinquish, forsake, give up. 

  • To squat or crouch down. 

adj
  • Quaternary. 

  • Free; no longer involved with; quit. 

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