brainstorm vs discovery

brainstorm and discovery both are nouns.

Word	Noun	Adjective	Verb	Adverb
brainstorm	Yes	No	Yes	No
discovery	Yes	No	No	No

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

brainstorm: the clear (and often sudden) understanding of a complex situation
discovery: a productive insight

Other hyponyms of brainstorm include light, revelation, breakthrough, find, flash.

brainstorm (noun)	discovery (noun)
the clear (and often sudden) understanding of a complex situation	the act of discovering something
	a productive insight
	something that is discovered
	(law) compulsory pretrial disclosure of documents relevant to a case; enables one side in a litigation to elicit information from the other side concerning the facts in the case

brainstorm (verb)	discovery (verb)
try to solve a problem by thinking intensely about it