isomerize vs American spelling

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

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

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

isomerize (verb)	American spelling (verb)
change into an isomer
cause to change into an isomer