fete vs festival

fete and festival both are nouns.

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

As nouns, fete and festival are synonyms defined as:

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

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

fete (verb)	festival (verb)
have a celebration