aftermath vs corollary

aftermath and corollary both are nouns.

Word	Noun	Adjective	Verb	Adverb
aftermath	Yes	No	No	No
corollary	Yes	No	No	No

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

Other hyponyms of aftermath include comeupance, comeuppance, just deserts, poetic justice, fruit, sequella, train, payoff, reward, wages.

aftermath (noun)	corollary (noun)
the outcome of an event especially as relative to an individual	(logic) an inference that follows directly from the proof of another proposition
the consequences of an event (especially a catastrophic event)	a practical consequence that follows naturally