cunthead vs shitfuck

cunthead

noun

  • A stupid or otherwise undesirable person. 

shitfuck

noun

  • A stupid or otherwise undesirable person. 

adj

  • extremely/very bad 

intj

  • Expressing dismay or discontent. 

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