mound vs hill

mound and hill both are nouns.

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

As nouns, mound and hill are synonyms defined as:

mound and hill: structure consisting of an artificial heap or bank usually of earth or stones

As nouns, mound and hill are synonyms defined as:

mound and hill: (baseball) the slight elevation on which the pitcher stands

Other synonyms of mound include pitcher's mound.

As nouns, hill is a hypernym of mound; that is, hill is a word with a broader meaning than mound:

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

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