nosepiece vs plate armour

nosepiece and plate armour both are nouns.

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

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

nosepiece: armor plate that protects the nose
plate armour: specially hardened steel plate used to protect fortifications or vehicles from enemy fire

Other hypernyms of nosepiece include armor plate, armor plating, armour plate, plate armor.

nosepiece (noun)	plate armour (noun)
the link between two lenses; rests on the nose	specially hardened steel plate used to protect fortifications or vehicles from enemy fire
armor plate that protects the nose	a historical type of personal armor made from iron or steel plates, which superseded mail during the 14th century.
a strap that is the part of a bridle that goes over the animal's nose