butt heads vs threap

butt heads

verb
  • To argue uncompromisingly. 

  • To struggle against something that does not give way. 

threap

verb
  • To argue; bicker; scold; rebuke 

  • To denounce. 

  • To cozen or cheat. 

  • To maintain obstinately against denial or contradiction; to insist (on). 

  • To cry out; complain; contend. 

  • To contradict. 

  • To affirm; to express with conviction. 

noun
  • A superstition or freet. 

  • Stubborn insistence. 

  • An altercation, quarrel, argument. 

  • An accusation or serious charge. 

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