Just googled these, if anyone is curious:
Regolith: Regolith is a layer of loose, heterogeneous superficial material covering solid rock. It includes dust, soil, broken rock, and other related materials and is present on Earth, the Moon, Mars, some asteroids, and other terrestrial planets and moons.
Vorago: Vorago is a gigantic, rocky, and extremely powerful boss monster created by the Anima Mundi, or as he refers to it, the “earth soul”. He has been billed as the toughest boss monster in RuneScape. He is an ancient being that caused chaos in the past, but was later defeated by a powerful weapon known as the maul of omens, prompting him to fall into a restorative slumber. Vorago used his remaining power to destroy the weapon. Towards the end of the Fifth Age, he awakened, now friendlier, albeit no less powerful.