fire iron vs salamander

fire iron and salamander both are nouns.

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

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

fire iron: metal fireside implements
salamander: 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, fire hook, poker, stove poker, shovel.

fire iron (noun)	salamander (noun)
metal fireside implements	any of various typically terrestrial amphibians that resemble lizards and that return to water only to breed
	fire iron consisting of a metal rod with a handle; used to stir a fire
	reptilian creature supposed to live in fire