astronaut vs sailor

astronaut

noun
  • A member of the crew of a spaceship or other spacecraft that travels beyond Earth's atmosphere, or someone trained to serve that purpose. 

  • An American space traveler, when contrasted against equivalent terms from other countries such as cosmonaut, taikonaut, spationaut, and vyomanaut. 

  • A returnee who frequently flies back and forth between Hong Kong and their adopted home country. 

sailor

noun
  • A member of the crew of a vessel; a mariner; a common seaman. 

  • Any of various nymphalid butterflies of the genera Neptis, Pseudoneptis and Phaedyma, having white markings on a dark base and commonly flying by gliding. 

  • A person who sails sailing boats as a sport or recreation. 

  • A person in the business of navigating ships or other vessels 

  • Someone knowledgeable in the practical management of ships. 

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