incline
n.a slope or a surface that is not flat. You use this word to describe a hill or a ramp that goes up or down.
n.an inclined surface, slope, or gradient. Refers to a physical deviation from the horizontal plane.
“The road has a steep incline that makes cycling difficult.”
“The architect designed a gentle incline at the entrance to ensure the building is fully accessible for wheelchair users.”
“The hikers struggled to maintain their pace as the narrow trail turned into a punishing incline near the mountain's summit.”
Often modified by adjectives such as 'steep', 'gentle', or 'slight'.
“Soap box derbies send motorless cars down a steep incline.”
From Middle English enclinen, from Old French encliner (modern incliner), from Latin inclīnō (“incline, tilt”), from in- + clīnō (compare -cline), from Proto-Indo-European *ḱley- (English lean).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.