cower vs shrink away

cower

verb
  • To crouch or cringe, or to avoid or shy away from something, in fear. 

  • To cause to cower; to frighten into submission. 

shrink away

verb
  • to draw back in fear; cringe, back down, shy away 

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