jactitation vs speech act

jactitation and speech act both are nouns.

Word	Noun	Adjective	Verb	Adverb
jactitation	Yes	No	No	No
speech act	Yes	No	No	No

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

jactitation (noun)	speech act (noun)
(pathology) extremely restless tossing and twitching usually by a person with a severe illness	the use of language to perform some act
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)