appellant vs plaintiff

appellant

noun
  • a litigant or party that is making an appeal in court 

  • One who makes an earnest entreaty of any kind. 

  • One of the clergy in the Jansenist controversy who rejected the bull Unigenitus issued in 1713, appealing to a pope "better informed", or to a general council. 

adj
  • in the process of appealing 

  • of or relating to appeals; appellate 

plaintiff

noun
  • A party bringing a suit in civil law against a defendant; accuser. 

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