fire warden vs fire-eater

fire warden and fire-eater both are nouns.

Word	Noun	Adjective	Verb	Adverb
fire warden	Yes	No	No	No
fire-eater	Yes	No	No	No

As nouns, fire-eater is a hypernym of fire warden; that is, fire-eater is a word with a broader meaning than fire warden:

fire warden: an official who is responsible for managing and protecting an area of forest
fire-eater: a member of a fire department who tries to extinguish fires

Other hypernyms of fire warden include fire fighter, firefighter, fireman, functionary, official.

fire warden (noun)	fire-eater (noun)
an official who is responsible for managing and protecting an area of forest	a performer who pretends to swallow fire
	a belligerent grouch
	a member of a fire department who tries to extinguish fires