abnegation vs self-sacrifice

abnegation and self-sacrifice both are nouns.

Word	Noun	Adjective	Verb	Adverb
abnegation	Yes	No	No	No
self-sacrifice	Yes	No	No	No

As nouns, self-sacrifice is a hypernym of abnegation; that is, self-sacrifice is a word with a broader meaning than abnegation:

abnegation: renunciation of your own interests in favor of the interests of others
self-sacrifice: acting with less concern for yourself than for the success of the joint activity

Other hypernyms of abnegation include forgoing, forswearing, renunciation, selflessness.

abnegation (noun)	self-sacrifice (noun)
renunciation of your own interests in favor of the interests of others	acting with less concern for yourself than for the success of the joint activity
the denial and rejection of a doctrine or belief