mound vs woodpile

mound and woodpile both are nouns.

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

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

mound (noun)	woodpile (noun)
the position on a baseball team of the player who throws the ball for a batter to try to hit	a pile or stack of wood to be used for fuel
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)	woodpile (verb)
form into a rounded elevation