backtalk vs retort

backtalk and retort both are nouns.

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

As nouns, retort is a hypernym of backtalk; that is, retort is a word with a broader meaning than backtalk:

backtalk: an impudent or insolent rejoinder
retort: a quick reply to a question or remark (especially a witty or critical one)

Other hypernyms of backtalk include comeback, counter, rejoinder, replication, return, riposte.

backtalk (noun)	retort (noun)
an impudent or insolent rejoinder	a vessel where substances are distilled or decomposed by heat
	a quick reply to a question or remark (especially a witty or critical one)

backtalk (verb)	retort (verb)
	answer back