A hillock
The word that means a small hill is "knoll."
Another word for a small hill is a hillock. Some of its other synonyms are rise, knoll, hummock, hump and dune.
A small natural hill.
The word that matches the definition of a small hill or mound is "knoll."
Mound
Knoll, Hillock, Hummock,Pingo and Mound are words used for a small hill.
small hill
A small natural hill.
a Bump?
Knoll.
altitude
a platue