egocentrism vs self-concern

egocentrism and self-concern both are nouns.

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

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

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

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

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