fire walking vs ceremony

fire walking and ceremony both are nouns.

Word	Noun	Adjective	Verb	Adverb
fire walking	Yes	No	No	No
ceremony	Yes	No	No	No

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

fire walking: the ceremony of walking barefoot over hot stones or a bed of embers
ceremony: a formal event performed on a special occasion

Other hypernyms of fire walking include ceremonial, ceremonial occasion, observance.

fire walking (noun)	ceremony (noun)
the ceremony of walking barefoot over hot stones or a bed of embers	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