sickle lucerne vs Medicago falcata

sickle lucerne and Medicago falcata both are nouns.

Word	Noun	Adjective	Verb	Adverb
sickle lucerne	Yes	No	No	No
Medicago falcata	Yes	No	No	No

As nouns, sickle lucerne and Medicago falcata are synonyms defined as:

sickle lucerne and Medicago falcata: European medic naturalized in North America having yellow flowers and sickle-shaped pods

Other synonyms of sickle lucerne include sickle alfalfa, sickle medick.

sickle lucerne (noun)	Medicago falcata (noun)
European medic naturalized in North America having yellow flowers and sickle-shaped pods	European medic naturalized in North America having yellow flowers and sickle-shaped pods