suit of armour vs coat of mail

suit of armour and coat of mail both are nouns.

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

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

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

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

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