noun (n.)

in grammar, "a name; word that denotes a thing (material or immaterial)," late 14c., from Anglo-French noun "name, noun," from Old French nom, non (Modern French nom), from Latin nomen "name, noun" (from PIE root *no-men- "name"). Old English used name to mean "noun." In old use also including adjectives (as noun adjective). Related: Nounal.