alumnus vs pupil

alumnus

noun
  • A male pupil or student. 

  • A student of any gender. 

  • A male graduate. 

  • A graduate of any gender. 

pupil

noun
  • A learner at a school under the supervision of a teacher. 

  • One who studies under supervision of a renowned expert in their field. 

  • The central dark part of an ocellated spot. 

  • The hole in the middle of the iris of the eye, through which light passes to be focused on the retina. 

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