Heh. "Toril" came from, I believe, Jeff Grubb.
Folk in the Realms don't think of themselves as living on a planet. They think they live in "Faerûn: ('home' in an old human tongue). Which is the continent name, so TSR added "Abeir-Toril" to have a planet name.#Realmslore
— Ed Greenwood (@TheEdVerse) November 27, 2019