American spelling vs analog

American spelling and analog both are nouns.

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

American spelling (noun)	analog (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	something having the property of being analogous to something else

American spelling (adjective)	analog (adjective)
	of a circuit or device having an output that is proportional to the input