self-concern vs egocentrism

self-concern and egocentrism both are nouns.

Word	Noun	Adjective	Verb	Adverb
self-concern	Yes	No	No	No
egocentrism	Yes	No	No	No

As nouns, self-concern and egocentrism are synonyms defined as:

self-concern and egocentrism: concern for your own interests and welfare

Other synonyms of self-concern include egoism, self-centeredness, self-interest.

self-concern (noun)	egocentrism (noun)
concern for your own interests and welfare	concern for your own interests and welfare