protection vs aegis

protection and aegis both are nouns.

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

As nouns, protection and aegis are synonyms defined as:

Other synonyms of protection include auspices.

protection (noun)	aegis (noun)
the activity of protecting someone or something	kindly endorsement and guidance
payment extorted by gangsters on threat of violence	armor plate that protects the chest; the front part of a cuirass
kindly endorsement and guidance
the imposition of duties or quotas on imports in order to protect domestic industry against foreign competition
a covering that is intend to protect from damage or injury
defense against financial failure; financial independence
the condition of being protected