synthesize vs American spelling

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

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

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

synthesize (verb)	American spelling (verb)
combine so as to form a more complex, product
combine and form a synthesis