bite back vs restrain

bite back

verb
  • To retaliate. 

  • To repress (an emotion). 

restrain

verb
  • To strain again. 

  • To control or keep in check. 

  • To deprive of liberty. 

  • To restrict or limit. 

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