step off vs walk away

step off

verb
  • Used other than figuratively or idiomatically: see step, off. 

  • To avoid a conflict; to back down 

  • To measure by steps or paces; hence, to divide (a space), or to form a series of marks, by successive measurements, as with dividers. 

walk away

verb
  • Used other than figuratively or idiomatically: see walk, away. 

  • To free oneself from a debt such as a mortgage by abandoning the collateral to the lender. To make a strategic default. 

  • To survive a challenging or dangerous situation without harm. 

  • To withdraw from a problematic situation. 

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