American spelling vs stabilization

American spelling and stabilization both are nouns.

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

American spelling (noun)	stabilization (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	the act of stabilizing something or making it more stable
	the act of making something (as a vessel or aircraft) less likely to overturn