dickweed vs shitehawk

dickweed

noun
  • an undesirable person 

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. 

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