American spelling vs biological warfare defense

American spelling and biological warfare defense both are nouns.

Word	Noun	Adjective	Verb	Adverb
American spelling	Yes	No	No	No
biological warfare defense	Yes	No	No	No

American spelling (noun)	biological warfare defense (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	defense against biological warfare