retort vs vessel

retort and vessel both are nouns.

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

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

retort (noun)	vessel (noun)
a vessel where substances are distilled or decomposed by heat	a craft designed for water transportation
a quick reply to a question or remark (especially a witty or critical one)	an object used as a container (especially for liquids)
	a tube in which a body fluid circulates

retort (verb)	vessel (verb)
answer back