hedgerow vs shelterbelt

hedgerow and shelterbelt both are nouns.

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

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

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

Other hyponyms of hedgerow include privet hedge, windbreak.

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