mound vs stockpile

mound and stockpile both are nouns.

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

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

mound (noun)	stockpile (noun)
the position on a baseball team of the player who throws the ball for a batter to try to hit	a storage pile accumulated for future use
structure consisting of an artificial heap or bank usually of earth or stones	something kept back or saved for future use or a special purpose
(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)	stockpile (verb)
form into a rounded elevation	have on hand