fire iron vs fire hook

fire iron and fire hook both are nouns.

Word	Noun	Adjective	Verb	Adverb
fire iron	Yes	No	No	No
fire hook	Yes	No	No	No

As nouns, fire hook is a hyponym of fire iron; that is, fire hook is a word with a more specific, narrower meaning than fire iron:

fire iron: metal fireside implements
fire hook: fire iron consisting of a metal rod with a handle; used to stir a fire

Other hyponyms of fire iron include coal tongs, fire tongs, poker, salamander, stove poker, shovel.

fire iron (noun)	fire hook (noun)
metal fireside implements	fire iron consisting of a metal rod with a handle; used to stir a fire