sickle lucerne vs sickle alfalfa

sickle lucerne and sickle alfalfa both are nouns.

Word	Noun	Adjective	Verb	Adverb
sickle lucerne	Yes	No	No	No
sickle alfalfa	Yes	No	No	No

As nouns, sickle lucerne and sickle alfalfa are synonyms defined as:

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

Other synonyms of sickle lucerne include Medicago falcata, sickle medick.

sickle lucerne (noun)	sickle alfalfa (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