dithyramb vs speech

dithyramb and speech both are nouns.

Word	Noun	Adjective	Verb	Adverb
dithyramb	Yes	No	No	No
speech	Yes	No	No	No

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

Other hypernyms of dithyramb include piece of writing, writing, written material, address.

dithyramb (noun)	speech (noun)
(ancient Greece) a passionate hymn (usually in honor of Dionysus)	the mental faculty or power of vocal communication
a wildly enthusiastic speech or piece of writing	(language) communication by word of mouth
	the act of delivering a formal spoken communication to an audience
	words making up the dialogue of a play
	a lengthy rebuke
	the exchange of spoken words
	your characteristic style or manner of expressing yourself orally
	something spoken