dithyramb vs anthem

dithyramb and anthem both are nouns.

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

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

dithyramb: (ancient Greece) a passionate hymn (usually in honor of Dionysus)
anthem: a song of praise (to God or to a saint or to a nation)

Other hypernyms of dithyramb include hymn.

dithyramb (noun)	anthem (noun)
(ancient Greece) a passionate hymn (usually in honor of Dionysus)	a song of praise (to God or to a saint or to a nation)
a wildly enthusiastic speech or piece of writing	a song of devotion or loyalty (as to a nation or school)