blench vs jump back

blench

verb
  • To deceive; cheat. 

  • To hinder; obstruct; disconcert; foil. 

  • To fly off; to turn aside. 

  • To shrink; start back; give way; flinch; turn aside or fly off. 

  • To quail. 

  • To draw back from; shrink; avoid; elude; deny, as from fear. 

noun
  • A deceit; a trick. 

  • A sidelong glance. 

jump back

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