snowbank vs mound

snowbank and mound both are nouns.

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

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

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

Other hypernyms of snowbank include hill.

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

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