adjudicate vs ref

adjudicate

verb
  • To act as a judge. 

  • To settle a legal case or other dispute. 

  • To seize, or convey, a debtor's estate as security. 

ref

verb
  • To referee; to act as a referee in a sport or game. 

noun
  • refrigerator. 

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