funeral vs ceremony

funeral and ceremony both are nouns.

Word	Noun	Adjective	Verb	Adverb
funeral	Yes	No	No	No
ceremony	Yes	No	No	No

As nouns, ceremony is a hypernym of funeral; that is, ceremony is a word with a broader meaning than funeral:

Other hypernyms of funeral include ceremonial, ceremonial occasion, observance.

funeral (noun)	ceremony (noun)
a ceremony at which a dead person is buried or cremated	the proper or conventional behavior on some solemn occasion
	any activity that is performed in an especially solemn elaborate or formal way
	a formal event performed on a special occasion