make over vs retain

make over

verb
  • To transfer ownership (or care) of, especially by means of a legal document. 

  • To renovate or to convert to a different use, particularly houses, offices, or rooms within them. 

  • (of a person, particularly a woman) To give a new physical look to, especially with a new hairstyle, cosmetics, or clothes. 

  • (of a career, public image, etc.) To improve upon or take in a new direction. 

retain

verb
  • To keep in possession or use. 

  • 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 hold secure. 

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