Hill
| Basic: |
| A hill is a type of ground, high ground, natural thing, offensively advantageous terrain, defensively advantageous terrain, and major terrain feature. |
| Documentation: |
| Comment: A specialization of #$VerticalProtrusion-Topographical. Each instance of #$Hill is a convex protrusion from the surface of a planet that is smaller than a Mountain (q.v.). |
| Structure: |
| Some hilltop is a surface part of every hill. Every hilltop and every hillside are a surface part of some hill. Some hillside is a surface part of every hill. Some hillside and some hilltop are in every hill. |
| Size: |
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| Miscellaneous: |
| The concept "San Francisco, CA" is conceptually related to the concept "hill". Every hill is between 0 and 1,000,000,000 years old. No hill is a landmass. |