vegetation vs forest

vegetation and forest both are nouns.

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

As nouns, forest is a hyponym of vegetation; that is, forest is a word with a more specific, narrower meaning than vegetation:

vegetation (noun)	forest (noun)
inactivity that is passive and monotonous, comparable to the inactivity of plant life	the trees and other plants in a large densely wooded area
an abnormal growth or excrescence (especially a warty excrescence on the valves of the heart)	land that is covered with trees and shrubs
all the plant life in a particular region or period
the process of growth in plants

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