tranquilizing vs American spelling

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

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

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

tranquilizing (adjective)	American spelling (adjective)
tending to soothe or tranquilize