American spelling vs desensitize

American spelling is a noun but desensitize is not a noun.

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

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

American spelling (verb)	desensitize (verb)
	make insensitive
	cause not to be sensitive