ACE vs flack

ACE

noun
  • A member of American Cinema Editors 

flack

noun
  • A publicist, a publicity agent. 

verb
  • To hang loosely; flag. 

  • To beat by flapping. 

  • To publicise, to promote. 

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