Difference between Hammock and Knoll

Hammock

Part of speech: noun

Definition: A swinging couch or bed, usually made of netting or canvas about six feet wide, suspended by clews or cords at the ends. A piece of land thickly wooded, and usually covered with bushes and vines. Used also attributively; as, hammock land. - Bartlett

Example sentence: A boyfriend made me a hammock in Richmond Park once. That was lovely - although I ended up getting a tick on my stomach from the deer.

Knoll

Part of speech: noun

Definition: A small mound or rounded hill.A knell.

Part of speech: verb

Definition: To ring (a bell) mournfully: to knell.