nerves vs self-control

nerves and self-control both are nouns.

Word	Noun	Adjective	Verb	Adverb
nerves	Yes	No	No	No
self-control	Yes	No	No	No

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

Other hypernyms of nerves include possession, self-command, self-possession, self-will, will power, willpower.

nerves (noun)	self-control (noun)
control of your emotions	the act of denying yourself; controlling your impulses
an uneasy psychological state	the trait of resolutely controlling your own behavior