mates vs matey

mates

adj
  • Friendly; having a friendship (with). 

matey

adj
  • Sociable or friendly. 

noun
  • A dockyard worker. 

  • A fellow sailor; often used affectedly, especially when portraying a pirate. 

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