self-realization vs American spelling

self-realization and American spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
self-realization	Yes	No	No	No
American spelling	Yes	No	No	No

self-realization (noun)	American spelling (noun)
the fulfillment of your capacities	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')