occupation license vs American spelling

occupation license and American spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
occupation license	Yes	No	No	No
American spelling	Yes	No	No	No

occupation license (noun)	American spelling (noun)
a license to pursue a particular occupation	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')