shelterbelt vs hedgerow

shelterbelt and hedgerow both are nouns.

Word	Noun	Adjective	Verb	Adverb
shelterbelt	Yes	No	No	No
hedgerow	Yes	No	No	No

As nouns, hedgerow is a hypernym of shelterbelt; that is, hedgerow is a word with a broader meaning than shelterbelt:

shelterbelt: hedge or fence of trees designed to lessen the force of the wind and reduce erosion
hedgerow: a fence formed by a row of closely planted shrubs or bushes

Other hypernyms of shelterbelt include hedge.

shelterbelt (noun)	hedgerow (noun)
hedge or fence of trees designed to lessen the force of the wind and reduce erosion	a fence formed by a row of closely planted shrubs or bushes