andiron vs dog-iron

andiron and dog-iron both are nouns.

Word	Noun	Adjective	Verb	Adverb
andiron	Yes	No	No	No
dog-iron	Yes	No	No	No

As nouns, andiron and dog-iron are synonyms defined as:

Other synonyms of andiron include dog, firedog.

andiron (noun)	dog-iron (noun)
metal supports for logs in a fireplace	metal supports for logs in a fireplace