academic vs alum

academic

noun
  • A senior member of an academy, college, or university; a person who attends an academy; a person engaged in scholarly pursuits; one who is academic in practice. 

  • A member of the Academy; an academician. 

  • A follower of Plato, a Platonist. 

  • Academic studies. 

  • Academic dress; academicals. 

adj
  • Having a love of or aptitude for learning. 

  • Belonging to the school or philosophy of Plato 

  • So scholarly as to be unaware of the outside world; lacking in worldliness; inexperienced in practical matters. 

  • Belonging to an academy or other higher institution of learning, or a scholarly society or organization. 

  • Conforming to set rules and traditions; conventional; formalistic. 

  • Having little practical use or value, as by being overly detailed and unengaging, or by being theoretical and speculative with no practical importance. 

  • In particular: relating to literary, classical, or artistic studies like the humanities, rather than to technical or vocational studies like engineering or welding. 

  • Subscribing to the architectural standards of Vitruvius. 

alum

noun
  • A past attendee or graduate (of either gender) of a college, university or other educational institution. 

  • Any similar double sulphate in which either or both of the potassium and aluminium is wholly or partly replaced by other univalent or tervalent cations. 

  • An astringent salt, usually occurring in the form of pale crystals, much used in the dyeing and tanning trade and in certain medicines, and now understood to be a double sulphate of potassium and aluminium (K₂SO₄·Al₂(SO₄)₃·24H₂O). 

verb
  • To steep in, or otherwise impregnate with, a solution of alum; to treat with alum. 

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