pharmacopoeia vs aggregation

pharmacopoeia and aggregation both are nouns.

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

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

Other hypernyms of pharmacopoeia include accumulation, assemblage, collection.

pharmacopoeia (noun)	aggregation (noun)
a collection or stock of drugs	the act of gathering something together
	several things grouped together or considered as a whole