self-denial vs forgoing

self-denial and forgoing both are nouns.

Word	Noun	Adjective	Verb	Adverb
self-denial	Yes	No	No	No
forgoing	Yes	No	No	No

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

self-denial: renunciation of your own interests in favor of the interests of others
forgoing: the act of renouncing; sacrificing or giving up or surrendering (a possession or right or title or privilege etc.)

Other hypernyms of self-denial include forswearing, renunciation, self-sacrifice, selflessness.

self-denial (noun)	forgoing (noun)
the act of denying yourself; controlling your impulses	the act of renouncing; sacrificing or giving up or surrendering (a possession or right or title or privilege etc.)
renunciation of your own interests in favor of the interests of others
the trait of practicing self discipline