attendant vs corpsman

attendant

noun
  • One who owes a duty or service to another. 

  • One who attends; one who works with or watches over something. 

  • That which accompanies or follows. 

  • A servant or valet. 

adj
  • Depending on, or owing duty or service to. 

  • Going with; associated; concomitant. 

corpsman

noun
  • An enlisted person in the U.S. Army who works as a field medic. 

  • A hospital corpsman. 

  • A military medic. 

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