argonaut vs madcap

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). 

madcap

noun
  • An impulsive, hasty, capricious person. 

adj
  • Hasty, impulsive, or reckless; capricious. 

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