American spelling vs timber

American spelling and timber both are nouns.

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

American spelling (noun)	timber (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	a beam made of wood
	a post made of wood
	(music) the distinctive property of a complex sound (a voice or noise or musical sound)
	land that is covered with trees and shrubs
	the wood of trees cut and prepared for use as building material