garel : gravel
The Illunse word for gravel (rock fragments and pebbles) is garel. Garel is a last name. Garel is a masculine first name, name of an Arthurian knight. Garel is the name of places in France and Guadeloupe.
This word is a mixture of the Old English word for gravel ceosel (gravel, sand) and the Latin word for gravel glarea.
garelas : gravels
The Illunse word for gravels is garelas. Garelas is an unusual last name.
Gravels in Latin is glareae. Gravels in Old English is ceoslas.
I'm not sure about how often the term gravels will be used, but I made the nominative plural anyway.