dispossess vs improve

dispossess

verb
  • To take possession of the ball/puck etc. (from someone). 

  • To deprive someone of the possession of land, especially by evicting them. 

  • To deprive someone of possession in general. 

improve

verb
  • To make (something) better; to increase the value or productivity (of something). 

  • To become better. 

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