hill vs snowbank

hill and snowbank both are nouns.

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

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

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

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

hill (noun)	snowbank (noun)
(baseball) the slight elevation on which the pitcher stands	a mound or heap of snow
structure consisting of an artificial heap or bank usually of earth or stones
a local and well-defined elevation of the land

hill (verb)	snowbank (verb)
form into a hill