An act of travelling from one place to another.
A diagrammatic representation of an area of land or sea showing physical features.
An object, quality, or event whose presence or occurrence indicates the probable presence or occurrence of something else.
Beneath the surface of the ground.
A large quantity of a flowing substance.
Move or cause to move back and forth or from side to side while suspended or on an axis.
Clothes worn under others, typically next to the skin.
A bird that frequents water, especially one that habitually wades or swims in fresh water.
A process in which substances combine chemically with oxygen from the air and typically give out bright light, heat, and smoke.
Space that can be occupied or where something can be done.