Then I'll tell you a secret.
There was no world of two moons, to begin with.
There was only one moon before the Trolls have build the Daughter Moon out of a pod ship as a base to exploit the ressources of the Mother Moon.
And they call Abode the WoTC - World of Thousand Caves - and never accepted the name it was given by the elves.
Now be calm and don't tell the Trolls you know ... they need to feel superior in their knowledge.