disclaim vs retain

disclaim

verb
  • To make an admission or warning. 

  • To renounce all claim to; to deny ownership of or responsibility for; to disown; to disavow; to reject. 

  • To deny, as a claim; to refuse. 

  • (law) To relinquish or deny having a claim; to disavow another's claim; to decline accepting, as an estate, interest, or office. 

retain

verb
  • To hold secure. 

  • 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. 

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