deracinate vs retain

deracinate

verb
  • To liberate or be liberated from a culture or its norms. 

  • To force (people) from their homeland to a new or foreign location. 

  • To pull up by the roots; to uproot; to extirpate. 

retain

verb
  • To employ by paying a retainer. 

  • To hold back (a pupil) instead of allowing them to advance to the next class or year. 

  • To keep in one's pay or service. 

  • To keep in possession or use. 

  • To hold secure. 

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