finishing vs perfecting

finishing

noun
  • The final work upon or ornamentation of a thing; finish. 

  • Shooting ability. 

  • The act of completing something. 

perfecting

noun
  • The process of printing on both sides of the printed-on material during its single pass through the printing press. 

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