Argonaut vs swashbuckler

Argonaut

name
  • One of the members of the Argo who sailed with Jason in search of the Golden Fleece. 

  • A team member for the Toronto Argonauts of the Canadian Football League. 

  • Any of several ships and submarines of the British and US navies. 

swashbuckler

noun
  • A daring adventurer. 

  • A kind of period adventure story with flashy action and lighthearted tone. 

  • A swordsman or fencer who engages in showy or extravagant sword play. 

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