comeuppance vs just deserts

comeuppance and just deserts both are nouns.

Word	Noun	Adjective	Verb	Adverb
comeuppance	Yes	No	No	No
just deserts	Yes	No	No	No

As nouns, comeuppance and just deserts are synonyms defined as:

comeuppance and just deserts: an outcome (good or bad) that is well deserved and fitting

Other synonyms of comeuppance include comeupance, poetic justice.

comeuppance (noun)	just deserts (noun)
an outcome (good or bad) that is well deserved and fitting	an outcome (good or bad) that is well deserved and fitting