hajduk vs picaroon

hajduk

noun

  • An outlaw, highwayman, or freedom fighter in the Balkans. 

  • A halberdier of a Hungarian noble. 

  • An attendant in German or Hungarian courts. 

picaroon

noun

  • A rogue. 

  • A pirate or picaro. 

  • A pirate ship. 

verb

  • To behave as a pirate. 

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