A solid shape with six equal square sides.

Cube comes from a Latin word, which borrowed it from Greek, referring to the geometric solid. The Greek word may also have meant a die used in games, since dice are cube-shaped. The word has been used in mathematics and everyday language for a very long time.

An open area of land for public recreation.

Park came into English from an Old French word meaning an enclosed game preserve. That word likely came from a Germanic root related to enclosing or fencing. Over time parks opened up from private hunting grounds to public green spaces.