American spelling vs anesthesia

American spelling and anesthesia both are nouns.

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

American spelling (noun)	anesthesia (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	loss of bodily sensation with or without loss of consciousness