decentralizing vs American spelling

decentralizing is not a noun while American spelling is a noun.

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

decentralizing (noun)	American spelling (noun)
	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')

decentralizing (adjective)	American spelling (adjective)
tending away from a central point