harass vs soften

harass

verb
  • To annoy (someone) frequently or systematically; to pester. 

  • To persistently bother (someone, or a group of people) physically or psychologically when such behaviour is illegal and/or unwanted, especially over an extended period. 

  • To trouble (someone, or a group of people) through repeated military-style attacks. 

  • To put excessive burdens upon (someone); to subject (someone) to anxieties. 

soften

verb
  • To undermine the morale of someone (often soften up). 

  • To make something soft or softer. 

  • To palatalize. 

  • To become or make (a consonant) more lenis, to lenite. 

  • To make less harsh 

  • To become soft or softer 

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