deciduous forest vs wood

deciduous forest and wood both are nouns.

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

deciduous forest: a forest comprising mainly of broad-leaved trees that shed all their leaves during one season.
wood: the trees and other plants in a large densely wooded area

Other hypernyms of deciduous forest include woods, forest.

deciduous forest (noun)	wood (noun)
a forest comprising mainly of broad-leaved trees that shed all their leaves during one season.	the hard fibrous lignified substance under the bark of trees
	the trees and other plants in a large densely wooded area
	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	a golf club with a long shaft used to hit long shots; originally made with a wooden head