Cave: A large hole in the side of a hill, cliff, or mountain, or one that is underground.
NOUN. That cave is very dark.
Coast: The land next to or close to the sea.
NOUN. It relaxes me to sit on the edge of the coast because there is water.
Egg: The aval object with a hard shell that is produced by femable birds, especially chickens, eaten as food.
NOUN. Be careful with the egg as it can break easily.