practise vs American spelling

practise is not a noun while American spelling is a noun.

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

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

practise (verb)	American spelling (verb)
learn by repetition
engage in a rehearsal (of)
carry out or practice; as of jobs and professions