ring armor vs gusset

ring armor and gusset both are nouns.

Word	Noun	Adjective	Verb	Adverb
ring armor	Yes	No	No	No
gusset	Yes	No	No	No

As nouns, gusset is a hyponym of ring armor; that is, gusset is a word with a more specific, narrower meaning than ring armor:

Other hyponyms of ring armor include brigandine, habergeon, byrnie, hauberk, voider.

ring armor (noun)	gusset (noun)
(Middle Ages) flexible armor made of interlinked metal rings	a piece of material used to strengthen or enlarge a garment
	a metal plate used to strengthen a joist
	a piece of chain mail covering a place unprotected by armor plate