American spelling vs generalization

American spelling and generalization both are nouns.

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

American spelling (noun)	generalization (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	an idea or conclusion having general application
	reasoning from detailed facts to general principles
	(psychology) transfer of a response learned to one stimulus to a similar stimulus
	the process of formulating general concepts by abstracting common properties of instances