I have long known that Hawaiian had direction words meaning "away from the ocean" and "toward the ocean," those being much more useful on islands compared to north-east-south-west. But I didn't have the actual terms until I stumbled across them today while looking for something else altogether.
Mauka (mow-kah) means on the mountain side of the road in the context of directions. Makai (mah-kigh) means on the ocean side of the road in the context of directions. -- "Do you know your mauka from makai?" by Sheila Beal
To keep them distinct: Mauka sounds more like mountains. Kai means ocean.