get together vs fete

get together and fete both are nouns.

Word	Noun	Adjective	Verb	Adverb
get together	Yes	No	Yes	No
fete	Yes	No	Yes	No

As verbs, fete is a hyponym of get together; that is, fete is a word with a more specific, narrower meaning than get together:

Other hyponyms of get together include pick up, reunite, rendezvous, call, call in, visit, celebrate.

get together (noun)	fete (noun)
a small informal social gathering	an organized series of acts and performances (usually in one place)
	an elaborate party (often outdoors)

get together (verb)	fete (verb)
get together socially or for a specific purpose	have a celebration
become part of; become a member of a group or organization
get people together