half-timber vs timbered

half-timber and timbered both are adjectives.

Word	Noun	Adjective	Verb	Adverb
half-timber	No	Yes	No	No
timbered	No	Yes	No	No

half-timber (adjective)	timbered (adjective)
having exposed wood framing with spaces filled with masonry, as in Tudor architecture	furnished with or made of wood or timbers
	covered with growing timber