firedog vs andiron

firedog and andiron both are nouns.

Word	Noun	Adjective	Verb	Adverb
firedog	Yes	No	No	No
andiron	Yes	No	No	No

As nouns, firedog and andiron are synonyms defined as:

Other synonyms of firedog include dog-iron, dog.

firedog (noun)	andiron (noun)
metal supports for logs in a fireplace	metal supports for logs in a fireplace