woods vs vegetation

woods and vegetation both are nouns.

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

As nouns, vegetation is a hypernym of woods; that is, vegetation is a word with a broader meaning than woods:

Other hypernyms of woods include botany, flora.

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