American spelling vs vascularization

American spelling and vascularization both are nouns.

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

American spelling (noun)	vascularization (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	the organic process whereby body tissue becomes vascular and develops capillaries