downy cheat vs brome

downy cheat and brome both are nouns.

Word	Noun	Adjective	Verb	Adverb
downy cheat	Yes	No	No	No
brome	Yes	No	No	No

As nouns, brome is a hypernym of downy cheat; that is, brome is a word with a broader meaning than downy cheat:

downy cheat: annual or winter annual grass with softly hairy leaves of the Mediterranean
brome: any of various woodland and meadow grasses of the genus Bromus; native to temperate regions

Other hypernyms of downy cheat include bromegrass.

downy cheat (noun)	brome (noun)
annual or winter annual grass with softly hairy leaves of the Mediterranean	any of various woodland and meadow grasses of the genus Bromus; native to temperate regions