Dionysia vs fete

Dionysia and fete both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dionysia	Yes	No	No	No
fete	Yes	No	Yes	No

As nouns, fete is a hypernym of Dionysia; that is, fete is a word with a broader meaning than Dionysia:

Dionysia: an orgiastic festival in ancient Greece in honor of Dionysus (= Bacchus)
fete: an organized series of acts and performances (usually in one place)

Other hypernyms of Dionysia include festival.

Dionysia (noun)	fete (noun)
an orgiastic festival in ancient Greece in honor of Dionysus (= Bacchus)	an organized series of acts and performances (usually in one place)
	an elaborate party (often outdoors)

Dionysia (verb)	fete (verb)
	have a celebration