riposte vs backtalk

riposte and backtalk both are nouns.

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

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

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

Other hyponyms of riposte include back talk, lip, mouth, sass, sassing.

riposte (noun)	backtalk (noun)
(fencing) a counterattack made immediately after successfully parrying the opponents lunge	an impudent or insolent rejoinder
a quick reply to a question or remark (especially a witty or critical one)

riposte (verb)	backtalk (verb)
answer back
make a return thrust