shitehawk vs twattock

shitehawk

noun
  • An objectionable person; a twat or wanker. 

  • The European herring gull. 

  • A large scavenging or predatory bird; especially (originally in military use in South Asia) the black kite. 

twattock

noun
  • A contemptible person. 

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