displace vs relegate

displace

verb
  • To move something, or someone, especially to forcibly move people from their homeland. 

  • To put out of place; to disarrange. 

  • To repress. 

  • To have a weight equal to that of the water displaced. 

  • To replace, on account of being superior to or more suitable than that which is being replaced. 

  • To supplant, or take the place of something or someone; to substitute. 

relegate

verb
  • Exile or banish to a particular place. 

  • Assign (a thing) to an appropriate place or situation based on appraisal or classification. 

  • Remove or send to a place far away. 

  • Submit (something) to someone else for appropriate action thereby; compare delegate. 

  • Consign (a person or thing) to a place, position, or role of obscurity, insignificance, oblivion, lower rank or (especially) inferiority. 

  • Refer (a point of contention) to an authority in deference to the judgment thereof. 

  • Transfer (a sports team) to a lower-ranking league division. 

  • Banish from proximity to Rome for a set time; compare relegate. 

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