cack vs periwinkle

cack

noun
  • A squawk. 

  • A discordant note. 

  • Excrement. 

  • Rubbish. 

  • An act of defecation. 

  • Penis. 

verb
  • To squawk. 

  • To laugh. 

  • To incorrectly play a note by hitting a partial other than the one intended. 

  • To defecate. 

  • To defecate (on); to shit. 

  • To kill. 

periwinkle

noun
  • A color with bluish and purplish hues, somewhat light. 

  • Any of several evergreen plants of the genus Vinca with blue or white flowers. 

  • Similar plants of genus Catharanthus. 

  • A mollusk of family Littorinidae. 

adj
  • Of pale bluish purple colour. 

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