chess vs Bromus secalinus

chess and Bromus secalinus both are nouns.

Word	Noun	Adjective	Verb	Adverb
chess	Yes	No	No	No
Bromus secalinus	Yes	No	No	No

As nouns, chess and Bromus secalinus are synonyms defined as:

chess and Bromus secalinus: weedy annual native to Europe but widely distributed as a weed especially in wheat

Other synonyms of chess include cheat.

chess (noun)	Bromus secalinus (noun)
a board game for two players who move their 16 pieces according to specific rules; the object is to checkmate the opponent's king	weedy annual native to Europe but widely distributed as a weed especially in wheat
weedy annual native to Europe but widely distributed as a weed especially in wheat