cow pasture vs lea

cow pasture and lea both are nouns.

Word	Noun	Adjective	Verb	Adverb
cow pasture	Yes	No	No	No
lea	Yes	No	No	No

As nouns, lea is a hypernym of cow pasture; that is, lea is a word with a broader meaning than cow pasture:

cow pasture: a pasture for cows
lea: a field covered with grass or herbage and suitable for grazing by livestock

Other hypernyms of cow pasture include grazing land, ley, pasture, pasture land, pastureland.

cow pasture (noun)	lea (noun)
a pasture for cows	a field covered with grass or herbage and suitable for grazing by livestock
	a unit of length of thread or yarn