alumnus vs diplomate

alumnus

noun

  • A male graduate. 

  • A student of any gender. 

  • A male pupil or student. 

  • A graduate of any gender. 

diplomate

noun

  • A professional who has earned a diploma. 

verb

  • To award a diploma to. 

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