maintain vs relegate

maintain

verb
  • To declare or affirm (a clause) to be true; to assert. 

  • To keep up; to preserve; to uphold (a state, condition etc.). 

relegate

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

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

  • Exile or banish to a particular place. 

  • 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. 

  • 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 maintain and relegate occurred in a corpus of books? (source: Google Ngram Viewer )