blemish vs skid mark

blemish

noun
  • A small flaw which spoils the appearance of something, a stain, a spot. 

  • A moral defect; a character flaw. 

verb
  • To tarnish (reputation, character, etc.); to defame. 

  • To spoil the appearance of. 

skid mark

noun
  • Any other mark or stain left on a surface from a sliding or rubbing object. 

  • Any burn on the skin caused by scraping the skin against a surface. 

  • A black mark left on a road surface from the sliding or skidding tires of a motor vehicle that has lost traction. 

  • A visible feces stain left on underpants, trousers, or sometimes the toilet bowl. 

  • A mark of a soiled finger wiped on a surface. 

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