know vs shag

know

verb
  • To experience. 

  • To perceive the truth or factuality of; to be certain of or that. 

  • To understand or have a grasp of through experience or study. 

  • To be or become aware or cognizant. 

  • To be able to play or perform (a song or other piece of music). 

  • To be acquainted or familiar with; to have encountered. 

  • To be aware of; to be cognizant of. 

  • To recognize as the same (as someone or something previously encountered) after an absence or change. 

  • To have knowledge; to have information, be informed. 

noun
  • Knowledge; the state of knowing. 

  • Knowledge; the state of knowing; now confined to the fixed phrase ‘in the know’ 

shag

verb
  • To have sexual intercourse with. 

  • To perform the dance called the shag. 

  • To make hairy or shaggy; to roughen. 

  • To shake, wiggle around. 

  • To chase after; especially, to chase after and return (a ball) hit usually out of play. 

  • To have sexual intercourse. 

  • To masturbate. 

noun
  • A type of rough carpet pile. 

  • A deliberately messy, shaggy hairstyle. 

  • An act of sexual intercourse. 

  • Matted material; rough massed hair, fibres etc. 

  • Coarse shredded tobacco. 

  • Any of several species of sea birds in the family Phalacrocoracidae (cormorant family), especially the common shag or European shag, Phalacrocorax aristotelis, found on European and African coasts. 

  • A fundraising dance in honour of a couple engaged to be married. 

  • A casual sexual partner. 

  • Friend; mate; buddy. 

  • A swing dance. 

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