selfish vs egocentric

selfish is not a noun while egocentric is a noun.

Word	Noun	Adjective	Verb	Adverb
selfish	No	Yes	No	No
egocentric	Yes	Yes	No	No

As adjectives, selfish and egocentric are synonyms defined as:

selfish and egocentric: concerned chiefly or only with yourself and your advantage to the exclusion of others

Other synonyms of selfish include egoistic, egoistical, self-centered, self-centred, self-seeking, self-serving.

selfish (noun)	egocentric (noun)
	a self-centered person with little regard for others

selfish (adjective)	egocentric (adjective)
concerned chiefly or only with yourself and your advantage to the exclusion of others	concerned chiefly or only with yourself and your advantage to the exclusion of others