obsequy vs ceremony

obsequy and ceremony both are nouns.

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

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

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

obsequy (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