hell-bent for leather vs soon

hell-bent for leather

adv
  • Synonym of hell-bent (“(recklessly) determined”) 

  • determinedly recklessly, in a manner that lacks restraint. 

  • Synonym of hell-for-leather (“very fast”) 

soon

adv
  • Readily; willingly; used with would, or some other word expressing will. 

  • Within a short time; quickly. 

  • Early. 

adj
  • Short in length of time from the present. 

  • Used as an alternative to express 'to be going to' in the form 'to be soon to' 

  • early 

How often have the words hell-bent for leather and soon occurred in a corpus of books? (source: Google Ngram Viewer )