pastureland vs lea

pastureland and lea both are nouns.

Word	Noun	Adjective	Verb	Adverb
pastureland	Yes	No	No	No
lea	Yes	No	No	No

As nouns, pastureland and lea are synonyms defined as:

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

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

pastureland (noun)	lea (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
	a unit of length of thread or yarn