festival vs fete

festival and fete both are nouns.

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

As nouns, festival and fete are synonyms defined as:

festival and fete: an organized series of acts and performances (usually in one place)

festival (noun)	fete (noun)
an organized series of acts and performances (usually in one place)	an organized series of acts and performances (usually in one place)
a day or period of time set aside for feasting and celebration	an elaborate party (often outdoors)

festival (verb)	fete (verb)
	have a celebration