disclaim vs maintain

disclaim

verb
  • To deny, as a claim; to refuse. 

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

  • To make an admission or warning. 

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

maintain

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

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

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