injure vs step up

injure

verb
  • To do injustice to. 

  • To wound or cause physical harm to a living creature. 

  • To damage or impair. 

step up

verb
  • To assume or take responsibility. 

  • To increase, augment, or advance, especially by one or more steps. 

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