poetic justice vs comeupance

poetic justice and comeupance both are nouns.

Word	Noun	Adjective	Verb	Adverb
poetic justice	Yes	No	No	No
comeupance	Yes	No	No	No

As nouns, poetic justice and comeupance are synonyms defined as:

poetic justice and comeupance: an outcome (good or bad) that is well deserved and fitting

Other synonyms of poetic justice include comeuppance, just deserts.

poetic justice (noun)	comeupance (noun)
an outcome (good or bad) that is well deserved and fitting	an outcome (good or bad) that is well deserved and fitting