dumb fuck vs dumbass

dumb fuck

noun
  • An extraordinarily stupid person. 

dumbass

noun
  • A stupid or foolish person. 

  • A term of endearment for someone who is stupid or foolish or has done something stupid or foolish. 

adj
  • Stupid, foolish. 

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