charva vs charver

charva

noun
  • Friend; mate. 

  • Unruly youth; disobedient child or teenager. 

  • A chav. 

charver

noun
  • A woman, especially as a sexual partner. 

  • Sexual intercourse; fucking. 

verb
  • To have sex with; to fuck. 

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