Scorzonera hispanica vs viper's grass

Scorzonera hispanica and viper's grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
Scorzonera hispanica	Yes	No	No	No
viper's grass	Yes	No	No	No

As nouns, Scorzonera hispanica and viper's grass are synonyms defined as:

Scorzonera hispanica and viper's grass: perennial south European herb having narrow entire leaves and solitary yellow flower heads and long black edible roots shaped like carrots

Other synonyms of Scorzonera hispanica include black salsify, scorzonera.

Scorzonera hispanica (noun)	viper's grass (noun)
perennial south European herb having narrow entire leaves and solitary yellow flower heads and long black edible roots shaped like carrots	perennial south European herb having narrow entire leaves and solitary yellow flower heads and long black edible roots shaped like carrots