An excerpt from Key Concepts in Language and Linguistics by R.L. Trask:
Those Eskimo words for 'snow'. By a
comical series of events, the legend
has grown up that the Eskimo languages
have vast numbers of words for
different kinds of snow. In fact, the
several dialects of the two Eskimo
languages variously exhibit between
two and four distinct words for snow.
This is about the same as English with
its snow, slush, sleet, blizzard (not
to mention skiers' terms like
hardpack, powder and crust).
After a quick search, I hit the following words related snow in Alaskan/Eskimo/Inuit languages:
Akkituyok: soft snow
Aput: snow used for a specific purpose
Mangokpok: watery snow
Massak: soft snow
Massalerauvok: snow filled with water
Mauja: soft deep snow
Pukak: snow crust
Qaniit: falling snow
Regarding the English words for hill, the following are its synonyms:
Also see this page for a list of "hill" synonyms and "hill" related words.