stockpile vs agglomerate

stockpile and agglomerate both are nouns.

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

As nouns, agglomerate is a hypernym of stockpile; that is, agglomerate is a word with a broader meaning than stockpile:

Other hypernyms of stockpile include cumulation, cumulus, heap, mound, pile.

stockpile (noun)	agglomerate (noun)
a storage pile accumulated for future use	a collection of objects laid on top of each other
something kept back or saved for future use or a special purpose	volcanic rock consisting of large fragments fused together

stockpile (adjective)	agglomerate (adjective)
	clustered together but not coherent

stockpile (verb)	agglomerate (verb)
have on hand	form into one cluster