bad actor vs yardbird

bad actor

noun
  • Individual or entity with the prior criminal conviction, or who has been sanctioned by the court or regulator. 

  • Ill-intentioned, mean, ill-tempered person. 

  • Used other than figuratively or idiomatically: see bad, actor. 

yardbird

noun
  • A person who is imprisoned. 

  • A chicken. 

  • A soldier who is required to perform menial work on the grounds of a military base. 

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