mound vs knoll

mound and knoll both are nouns.

Word	Noun	Adjective	Verb	Adverb
mound	Yes	No	Yes	No
knoll	Yes	No	No	No

As nouns, mound and knoll are synonyms defined as:

Other synonyms of mound include hammock, hillock, hummock.

mound (noun)	knoll (noun)
the position on a baseball team of the player who throws the ball for a batter to try to hit	a small natural hill
structure consisting of an artificial heap or bank usually of earth or stones
(baseball) the slight elevation on which the pitcher stands
a collection of objects laid on top of each other
a small natural hill

mound (verb)	knoll (verb)
form into a rounded elevation