argonaut vs raider

argonaut

noun
  • An adventurer on a dangerous but rewarding quest. 

  • Any of several species of shelled octopods of the family Argonautidae (of which only the genus Argonauta is not extinct). 

raider

noun
  • One who engages in a raid; a plunderer. 

  • A warship which is light, maneuverable, and fast-moving. 

  • A law enforcement official who conducts a raid on a building in search for illicit goods. 

  • A person who uncovers evidence of improper behavior within governmental or private organizations. 

  • A person who takes or attempts to take control of a firm against the will of current management by purchasing a controlling interest of stock and acquiring proxies. 

  • A special forces operative; a commando. 

  • A warplane on an air raid. 

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