concede vs fess

concede

verb
  • To admit or agree to be true; to acknowledge. 

  • To yield or suffer; to surrender; to grant 

  • To yield or make concession. 

  • (of a bowler) to have runs scored off of one's bowling. 

  • To grant, as a right or privilege; to make concession of. 

  • To have a goal or point scored against 

fess

verb
  • To confess; to admit. 

noun
  • A horizontal band across the middle of the shield. 

adj
  • Of animals, bad-tempered, fierce. 

  • Lively; active; strong. 

  • Proud; conceited. 

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