American spelling vs esthetics

American spelling and esthetics both are nouns.

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

American spelling (noun)	esthetics (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	(art) the branch of philosophy dealing with beauty and taste (emphasizing the evaluative criteria that are applied to art)