plate armour vs tasse

plate armour and tasse both are nouns.

Word	Noun	Adjective	Verb	Adverb
plate armour	Yes	No	No	No
tasse	Yes	No	No	No

As nouns, tasse is a hyponym of plate armour; that is, tasse is a word with a more specific, narrower meaning than plate armour:

plate armour: specially hardened steel plate used to protect fortifications or vehicles from enemy fire
tasse: one of two pieces of armor plate hanging from the fauld to protect the upper thighs

plate armour (noun)	tasse (noun)
specially hardened steel plate used to protect fortifications or vehicles from enemy fire	one of two pieces of armor plate hanging from the fauld to protect the upper thighs
a historical type of personal armor made from iron or steel plates, which superseded mail during the 14th century.