popularization vs American spelling

popularization and American spelling both are nouns.

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

popularization (noun)	American spelling (noun)
the act of making something attractive to the general public	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')
an interpretation that easily understandable and acceptable