downy bromegrass vs drooping brome

downy bromegrass and drooping brome both are nouns.

Word	Noun	Adjective	Verb	Adverb
downy bromegrass	Yes	No	No	No
drooping brome	Yes	No	No	No

As nouns, downy bromegrass and drooping brome are synonyms defined as:

downy bromegrass and drooping brome: annual or winter annual grass with softly hairy leaves of the Mediterranean

Other synonyms of downy bromegrass include Bromus tectorum, cheatgrass, downy brome, downy cheat, downy chess.

downy bromegrass (noun)	drooping brome (noun)
annual or winter annual grass with softly hairy leaves of the Mediterranean	annual or winter annual grass with softly hairy leaves of the Mediterranean