deed vs opus

deed

noun
  • A brave or noteworthy action; a feat or exploit. 

  • An action or act; something that is done. 

  • A legal instrument that is executed under seal or before witnesses. 

  • Action or fact, as opposed to rhetoric or deliberation. 

verb
  • To transfer real property by deed. 

opus

noun
  • A work, especially of art. 

  • A work of music or set of works with a specified rank in an ordering of a composer's complete published works. 

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