American spelling vs realization

American spelling and realization both are nouns.

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

American spelling (noun)	realization (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	making real or giving the appearance of reality
	a sale in order to obtain money (as a sale of stock or a sale of the estate of a bankrupt person) or the money so obtained
	something that is made real or concrete
	the completion or enrichment of a piece of music left sparsely notated by a composer
	coming to understand something clearly and distinctly
	a musical composition that has been completed or enriched by someone other than the composer