forest vs timber

forest and timber both are nouns.

Word	Noun	Adjective	Verb	Adverb
forest	Yes	No	Yes	No
timber	Yes	No	No	No

As nouns, forest and timber are synonyms defined as:

Other synonyms of forest include timberland, woodland.

forest (noun)	timber (noun)
the trees and other plants in a large densely wooded area	a beam made of wood
land that is covered with trees and shrubs	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

forest (verb)	timber (verb)
establish a forest on previously unforested land