filth vs p*rn

filth

noun
  • A vile or disgusting person. 

  • Smut; that which sullies or defiles the moral character; corruption; pollution. 

  • The police. 

  • Dirt; foul matter; that which soils or defiles. 

p*rn

noun
  • Censored spelling of porn. 

How often have the words filth and p*rn occurred in a corpus of books? (source: Google Ngram Viewer )