ego vs consciousness

ego and consciousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
ego	Yes	No	No	No
consciousness	Yes	No	No	No

As nouns, consciousness is a hypernym of ego; that is, consciousness is a word with a broader meaning than ego:

ego: your consciousness of your own identity
consciousness: an alert cognitive state in which you are aware of yourself and your situation

ego (noun)	consciousness (noun)
(psychoanalysis) the conscious mind	an alert cognitive state in which you are aware of yourself and your situation
your consciousness of your own identity	having knowledge of
an inflated feeling of pride in your superiority to others