American spelling vs cross-fertilization

American spelling and cross-fertilization both are nouns.

Word	Noun	Adjective	Verb	Adverb
American spelling	Yes	No	No	No
cross-fertilization	Yes	No	No	No

American spelling (noun)	cross-fertilization (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	interchange between different cultures or different ways of thinking that is mutually productive and beneficial
	fertilization by the union of male and female gametes from different individual of the same species