clawback vs hanger-on

clawback

noun
  • A rule that permits a party to take back evidentiary materials that were mistakenly turned over to the other party but to which the other party would not have been entitled. 

  • Any recovery of a performance-related payment based on discovery that the performance was not genuine. 

  • Money that a party is entitled to keep under one tax provision but is taken by another tax provision. 

hanger-on

noun
  • Someone who hangs on, or sticks to, a person, place, or service. 

  • An onsetter. 

How often have the words clawback and hanger-on occurred in a corpus of books? (source: Google Ngram Viewer )