jungle vs wood

jungle and wood both are nouns.

As nouns, wood is a hypernym of jungle; that is, wood is a word with a broader meaning than jungle:

Other hypernyms of jungle include woods, forest.

jungle (noun)	wood (noun)
a location marked by an intense competition and struggle for survival	the hard fibrous lignified substance under the bark of trees
a place where hoboes camp	the trees and other plants in a large densely wooded area
an impenetrable equatorial forest	any wind instrument other than the brass instruments
	a golf club with a long shaft used to hit long shots; originally made with a wooden head