downy chess vs Bromus tectorum

downy chess and Bromus tectorum both are nouns.

Word	Noun	Adjective	Verb	Adverb
downy chess	Yes	No	No	No
Bromus tectorum	Yes	No	No	No

As nouns, downy chess and Bromus tectorum are synonyms defined as:

downy chess and Bromus tectorum: annual or winter annual grass with softly hairy leaves of the Mediterranean

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

downy chess (noun)	Bromus tectorum (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