mound vs aggregation

mound and aggregation both are nouns.

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

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

Other hypernyms of mound include accumulation, assemblage, collection.

mound (noun)	aggregation (noun)
the position on a baseball team of the player who throws the ball for a batter to try to hit	the act of gathering something together
structure consisting of an artificial heap or bank usually of earth or stones	several things grouped together or considered as a whole
(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)	aggregation (verb)
form into a rounded elevation