boring vs smutty

boring

adj
  • Capable of penetrating; piercing. 

  • Used, designed to be used, or able to drill holes. 

  • Suffering from boredom; mildly annoyed and restless through having nothing to do. 

  • Causing boredom or tiredness; making you to feel tired and impatient. 

noun
  • Fragment thrown up when something is bored or drilled. 

  • A pit or hole which has been bored. 

smutty

adj
  • Affected with the smut fungus. 

  • Soiled with smut; blackened, dirty. 

  • Obscene, indecent. 

verb
  • To make dirty; to soil. 

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