luau vs fete

luau and fete both are nouns.

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

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

luau: an elaborate Hawaiian feast or party (especially one accompanied by traditional foods and entertainment)
fete: an elaborate party (often outdoors)

Other hypernyms of luau include feast, fiesta.

luau (noun)	fete (noun)
an elaborate Hawaiian feast or party (especially one accompanied by traditional foods and entertainment)	an organized series of acts and performances (usually in one place)
	an elaborate party (often outdoors)

luau (verb)	fete (verb)
	have a celebration