grazing land vs pastureland

grazing land and pastureland both are nouns.

Word	Noun	Adjective	Verb	Adverb
grazing land	Yes	No	No	No
pastureland	Yes	No	No	No

As nouns, grazing land and pastureland are synonyms defined as:

grazing land and pastureland: a field covered with grass or herbage and suitable for grazing by livestock

Other synonyms of grazing land include lea, ley, pasture, pasture land.

grazing land (noun)	pastureland (noun)
a field covered with grass or herbage and suitable for grazing by livestock	a field covered with grass or herbage and suitable for grazing by livestock