filthy vs venereal

filthy

adj
  • Obscene or offensive. 

  • Covered with filth; very dirty. 

  • Very unpleasant or disagreeable. 

verb
  • To make very dirty; to saturate something with dirt. 

  • To cover in filth. 

venereal

adj
  • Of or relating to the genitals or sexual intercourse. 

  • Of a disease: sexually transmitted; of or relating to, or adapted to the cure of, a venereal disease. 

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