hierarchization vs American spelling

hierarchization and American spelling both are nouns.

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

hierarchization (noun)	American spelling (noun)
The act or result of hierarchizing; the establishment of a hierarchy.	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')