American spelling vs concenter

American spelling is a noun but concenter is not a noun.

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

American spelling (noun)	concenter (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')

American spelling (verb)	concenter (verb)
	bring into focus or alignment; to converge or cause to converge; of ideas or emotions