deprecation vs disuse

deprecation

noun
  • The act of deprecating. 

  • A praying against evil; prayer that an evil may be removed or prevented; strong expression of disapprobation. 

  • Entreaty for pardon; petitioning. 

  • An imprecation or curse. 

disuse

noun
  • The state of not being used; neglect. 

verb
  • To cease the use of. 

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