picaroon vs pirater

picaroon

noun

  • A pirate or picaro. 

  • A rogue. 

  • A pirate ship. 

verb

  • To behave as a pirate. 

pirater

noun

  • One who pirates (produces unauthorized copies). 

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