meadow vs hayfield

meadow and hayfield both are nouns.

Word	Noun	Adjective	Verb	Adverb
meadow	Yes	No	No	No
hayfield	Yes	No	No	No

As nouns, meadow and hayfield are synonyms defined as:

meadow and hayfield: a piece of land covered or mostly covered with grass; a field where grass or alfalfa are grown to be made into hay

meadow (noun)	hayfield (noun)
a piece of land covered or mostly covered with grass; a field where grass or alfalfa are grown to be made into hay	a piece of land covered or mostly covered with grass; a field where grass or alfalfa are grown to be made into hay