American spelling vs biodefense

American spelling and biodefense both are nouns.

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

American spelling (noun)	biodefense (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	procedures involved in taking defensive measures against attacks using biological agents