mound vs snowbank

mound and snowbank both are nouns.

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

As nouns, snowbank is a hyponym of mound; that is, snowbank is a word with a more specific, narrower meaning than mound:

mound: structure consisting of an artificial heap or bank usually of earth or stones
snowbank: a mound or heap of snow

Other hyponyms of mound include barbette, barrow, burial mound, grave mound, tumulus, embankment, snow bank.

mound (noun)	snowbank (noun)
the position on a baseball team of the player who throws the ball for a batter to try to hit	a mound or heap of snow
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)	snowbank (verb)
form into a rounded elevation