American spelling vs hierarchization

American spelling and hierarchization both are nouns.

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

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