vaunt vs jactitation

vaunt and jactitation both are nouns.

Word	Noun	Adjective	Verb	Adverb
vaunt	Yes	No	Yes	No
jactitation	Yes	No	No	No

As nouns, jactitation is a hypernym of vaunt; that is, jactitation is a word with a broader meaning than vaunt:

Other hypernyms of vaunt include boast, boasting, self-praise.

vaunt (noun)	jactitation (noun)
extravagant self-praise	(pathology) extremely restless tossing and twitching usually by a person with a severe illness
	speaking of yourself in superlatives
	(law) a false boast that can harm others; especially a false claim to be married to someone (formerly actionable at law)

vaunt (verb)	jactitation (verb)
show off