deprecate vs revel

deprecate

verb
  • To declare something obsolescent; to recommend against a function, technique, command, etc. that still works but has been replaced. 

  • To belittle or express disapproval of. 

revel

noun
  • A kind of dance. 

  • An instance of merrymaking; a celebration. 

  • A wake for the dead. 

verb
  • To make merry; to have a happy, lively time. 

  • To take delight (in something). 

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