suit of armor vs coat of mail

suit of armor and coat of mail both are nouns.

Word	Noun	Adjective	Verb	Adverb
suit of armor	Yes	No	No	No
coat of mail	Yes	No	No	No

As nouns, suit of armor and coat of mail are synonyms defined as:

suit of armor and coat of mail: armor that protects the wearer's whole body

Other synonyms of suit of armor include body armor, body armour, cataphract, suit of armour.

suit of armor (noun)	coat of mail (noun)
armor that protects the wearer's whole body	armor that protects the wearer's whole body