retort vs comeback

retort and comeback both are nouns.

Word	Noun	Adjective	Verb	Adverb
retort	Yes	No	Yes	No
comeback	Yes	No	No	No

As nouns, retort and comeback are synonyms defined as:

retort and comeback: a quick reply to a question or remark (especially a witty or critical one)

Other synonyms of retort include counter, rejoinder, replication, return, riposte.

retort (noun)	comeback (noun)
a vessel where substances are distilled or decomposed by heat	return by a celebrity to some previously successful activity
a quick reply to a question or remark (especially a witty or critical one)	a quick reply to a question or remark (especially a witty or critical one)

retort (verb)	comeback (verb)
answer back