aegis vs armour plate

aegis and armour plate both are nouns.

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

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

aegis: armor plate that protects the chest; the front part of a cuirass
armour plate: specially hardened steel plate used to protect fortifications or vehicles from enemy fire

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

aegis (noun)	armour plate (noun)
kindly endorsement and guidance	specially hardened steel plate used to protect fortifications or vehicles from enemy fire
armor plate that protects the chest; the front part of a cuirass