self-control vs will power

self-control and will power both are nouns.

Word	Noun	Adjective	Verb	Adverb
self-control	Yes	No	No	No
will power	Yes	No	No	No

As nouns, self-control and will power are synonyms defined as:

self-control and will power: the trait of resolutely controlling your own behavior

Other synonyms of self-control include possession, self-command, self-possession, self-will, willpower.

self-control (noun)	will power (noun)
the act of denying yourself; controlling your impulses	the trait of resolutely controlling your own behavior
the trait of resolutely controlling your own behavior