Bromus tectorum vs cheatgrass

Bromus tectorum and cheatgrass both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bromus tectorum	Yes	No	No	No
cheatgrass	Yes	No	No	No

As nouns, Bromus tectorum and cheatgrass are synonyms defined as:

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

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

Bromus tectorum (noun)	cheatgrass (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