dog-iron vs andiron

dog-iron and andiron both are nouns.

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

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

Other synonyms of dog-iron include dog, firedog.

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