fire walking vs observance

fire walking and observance both are nouns.

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

As nouns, observance is a hypernym of fire walking; that is, observance 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
observance: a formal event performed on a special occasion

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

fire walking (noun)	observance (noun)
the ceremony of walking barefoot over hot stones or a bed of embers	the act of observing; taking a patient look
	conformity with law or custom or practice etc.
	the act of noticing or paying attention
	a formal event performed on a special occasion