X vs smudge

X

character
  • The twenty-fourth letter of the English alphabet, called ex and written in the Latin script. 

num
  • An unknown quantity or unknown value. 

adj
  • Obscene. 

  • Intersex or non-binary (in passports and identification documents). 

name
  • A surname, used by those who have had their identity or heritage, including their proper ancestral names, erased or forgotten. 

  • Christ 

  • A placeholder for an unknown, suppressed or hypothetical name. 

noun
  • Any mark that looks like that letter, such as a mark made by a person who cannot read or write in lieu of a signature. 

  • Cross, crossing. 

  • The spot behind the goal. 

  • Ecstasy, a particular street drug. 

smudge

verb
  • To subject to ritual burning of herbs (suffumigation, smudging). 

  • To stifle or smother with smoke. 

  • To soil or smear with dirt. 

  • To obscure by blurring; to smear. 

  • To use dense smoke to protect from insects. 

  • To burn herbs as a cleansing ritual (suffumigation). 

noun
  • Dense smoke, such as that used for fumigation. 

  • A quantity of herbs used in suffumigation. 

  • A heap of damp combustibles partially ignited and burning slowly, placed on the windward side of a house, tent, etc. to keep off mosquitoes or other insects. 

  • A blemish or smear, especially a dark or sooty one. 

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