ladrone vs picaroon

ladrone

noun

  • A robber; a pirate; a rascal or rogue. 

picaroon

noun

  • A pirate or picaro. 

  • A rogue. 

  • A pirate ship. 

verb

  • To behave as a pirate. 

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