| A | B |
|---|
| Precipitation | condensed water vapor that falls to the Earth's surface. |
| Runoff | includes the variety of ways by which water moves across the land. This includes both surface runoff and channel runoff. |
| Infiltration | the flow of water from the ground surface into the ground. |
| Evaporation | the transformation of water from liquid to gas phases as it moves from the ground or bodies of water into the overlying atmosphere. |
| Condensation | the transformation of water vapour to liquid water droplets in the air, producing clouds and fog. |
| Transpiration | The evaporation of water from trees. |
| Sublimation | the state change directly from solid water (snow or ice) to water vapor. |
| Snowmelt | refers to the runoff produced by melting snow. |
