mound vs slagheap

mound and slagheap both are nouns.

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

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

mound (noun)	slagheap (noun)
the position on a baseball team of the player who throws the ball for a batter to try to hit	pile of waste matter from coal mining etc
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)	slagheap (verb)
form into a rounded elevation