It is called a pile
A pile.
mound
Pile.
A heap is unspecified - it is a group of things placed, thrown or lying one on another. It can be a great quantity or a small number. It can refer to a 'heap' of food on a plate to a 'heap' of stone as in a hill. A similar word would be 'pile'
A small valley is called a vale.
A small natural hill.
No - Broken Hill is better classed as a small city.
They call it silent hill because its roughly based off the silent hill game series.
The noun 'hill' is a singular, common, concrete noun; a word for a natural elevation of land, smaller than a mountain; a pile or heap of something; a steep slope in a path or road; a word for a thing.The word 'hill' is also a verb: hill, hills, hilling, hilled.
Knoll, Hillock, Hummock,Pingo and Mound are words used for a small hill.
A hillock.
It is a small hill.
It is a small hill.
A small round hill is known as a Knoll-Ref. Webster Dictionary.