IPA: /ˈhɪlˌsloʊp/
KK: /ˈhɪlˌsloʊp/
A sloping area on the side of a hill.
The hikers carefully made their way down the hillslope.
Hillslope → The word is formed from "hill" (from Old English *hyll*, meaning a naturally raised area of land) and "slope" (from Old English *slope*, meaning a slant or incline). The term "hillslope" refers to the inclined surface of a hill.
Imagine a raised area of land ('hill') that has a slant or incline ('slope') — that's what a hillslope is.
No commonly confused words.