corail

coral (an aquatic organism living in maritime colonies); coral (precious material of those dwellings, harvested mainly for decorative and collectionable uses)

“C'est à ce dernier qu'appartient le corail, curieuse substance qui fut tour à tour classée dans les règnes minéral, végétal et animal.” — It's in this last that precious coral belongs, an unusual substance that, at different times, has been classified in the mineral, vegetable, and animal kingdoms.

From Latin corallium (“coral”), from Ancient Greek κοράλλιον (korállion, “coral”).