alumnus vs junior

alumnus

noun
  • A student of any gender. 

  • A male pupil or student. 

  • A male graduate. 

  • A graduate of any gender. 

junior

noun
  • A third-year student at a high school or university. 

  • A younger person. 

  • A junior barrister. 

  • A name suffix used after a son's name when his father has the same name (abbreviations: Jnr., Jr., Jun.). 

adj
  • Belonging to a younger person, or an earlier time of life. 

  • Low in rank; having a subordinate role, job, or situation. 

  • Younger. 

  • Of or pertaining to a third academic year in a four-year high school (eleventh grade) or university. 

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