pass over vs retain

pass over

verb
  • To make a transit of; to pass through or across (something). 

  • Used other than figuratively or idiomatically: see pass, over. 

  • To bypass or disregard in favour of someone or something else. 

  • To bypass (something); to skip (something). 

  • To overlook; not to note or resent. 

  • To die and thus progress to the afterlife. 

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 pass over and retain occurred in a corpus of books? (source: Google Ngram Viewer )