compost pile vs agglomerate

compost pile and agglomerate both are nouns.

Word	Noun	Adjective	Verb	Adverb
compost pile	Yes	No	No	No
agglomerate	Yes	Yes	Yes	No

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

compost pile: a heap of manure and vegetation and other organic residues that are decaying to become compost
agglomerate: a collection of objects laid on top of each other

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

compost pile (noun)	agglomerate (noun)
a heap of manure and vegetation and other organic residues that are decaying to become compost	a collection of objects laid on top of each other
	volcanic rock consisting of large fragments fused together

compost pile (adjective)	agglomerate (adjective)
	clustered together but not coherent

compost pile (verb)	agglomerate (verb)
	form into one cluster