brigandine vs ring armour

brigandine and ring armour both are nouns.

Word	Noun	Adjective	Verb	Adverb
brigandine	Yes	No	No	No
ring armour	Yes	No	No	No

As nouns, ring armour is a hypernym of brigandine; that is, ring armour is a word with a broader meaning than brigandine:

brigandine: a medieval coat of chain mail consisting of metal rings sewn onto leather or cloth
ring armour: (Middle Ages) flexible armor made of interlinked metal rings

Other hypernyms of brigandine include chain armor, chain armour, chain mail, mail, ring armor, ring mail.

brigandine (noun)	ring armour (noun)
a medieval coat of chain mail consisting of metal rings sewn onto leather or cloth	(Middle Ages) flexible armor made of interlinked metal rings