jactitation vs bluster

jactitation and bluster both are nouns.

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

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

jactitation (noun)	bluster (noun)
(pathology) extremely restless tossing and twitching usually by a person with a severe illness	a swaggering show of courage
speaking of yourself in superlatives	vain and empty boasting
(law) a false boast that can harm others; especially a false claim to be married to someone (formerly actionable at law)	a violent gusty wind
	noisy confusion and turbulence

jactitation (verb)	bluster (verb)
	act in an arrogant, overly self-assured, or conceited manner
	show off
	blow hard; be gusty, as of wind