aegis vs egis

aegis and egis both are nouns.

Word	Noun	Adjective	Verb	Adverb
aegis	Yes	No	No	No
egis	Yes	No	No	No

As nouns, aegis and egis are synonyms defined as:

aegis and egis: armor plate that protects the chest; the front part of a cuirass

Other synonyms of aegis include breastplate.

aegis (noun)	egis (noun)
kindly endorsement and guidance	armor plate that protects the chest; the front part of a cuirass
armor plate that protects the chest; the front part of a cuirass