belittle vs soften

belittle

verb
  • To knowingly say that something is smaller or less important than it actually is, especially as a way of showing contempt or deprecation. 

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 belittle and soften occurred in a corpus of books? (source: Google Ngram Viewer )