American spelling vs centering

American spelling and centering both are nouns.

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

American spelling (noun)	centering (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	(American football) putting the ball in play by passing it (between the legs) to a back
	the concentration of attention or energy on something