Viking vs buccaneer

Viking

noun
  • A player on the Minnesota Vikings NFL team. 

  • A stock character common in the fantasy genre, namely a barbarian, generally equipped with an axe or sword and a helmet adorned with horns. 

  • A Norseman (medieval Scandinavian). 

  • An ethnic Swede, Norwegian, Dane, Icelander or Faroe Islander. 

  • Scandinavian/Northern European seafarers, most familiarly raiders and pirates during the Viking age. 

name
  • A sea area between Scotland and Norway 

  • A city in Minnesota 

  • A town in Alberta, Canada 

buccaneer

noun
  • Any of a group of seamen who cruised on their own account on the Spanish Main and in the Pacific in the 17th century, who were similar to pirates but did not prey on ships of their own nation. 

  • A pirate. 

verb
  • To engage in piracy against any but one's own nation's ships. 

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