dirt vs know

dirt

noun
  • Previously unknown facts, or the invented "facts", about a person. 

  • A stain or spot (on clothes etc); any foreign substance that worsens appearance. 

  • Meanness; sordidness. 

  • In placer mining, earth, gravel, etc., before washing. 

  • freckles 

  • Soil or earth. 

verb
  • To make foul or filthy; soil; befoul; dirty 

know

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

  • Knowledge; the state of knowing. 

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

  • To experience. 

  • 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. 

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