| Term: | Valley |
| Definition: | A linear depression in the landscape that slopes down to a stream, lake or the ocean. Formed by water and/or ice erosion. |
| Term: | Valley |
| Definition: | Long depression running from a higher level to a lower level (or to the coast), with a glacier completely filling the feature, partly filling it or terminating with it; rarely a valley may be ice-free with a seasonal stream running through it |