learnedism

noun1

1. •
   A word acquired through formal education rather than through childhood language acquisition.

   • Katharevousa τὸ πλοῖον and the demotic learnedism τὸ πλοῖο mean 'ship' in general. Demotic πλοῖο is stylistically more elevated than its synonym τὸ καράβι. — 1975