cad vs scrote

cad

noun
  • A low-bred, presuming person; a mean, vulgar fellow, especially one that cannot be trusted with a lady. 

scrote

noun
  • A stereotypical low-value and obnoxious man. 

  • A worthless or contemptible person; a gobshite or toerag. 

  • The scrotum. 

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