lucerne vs medick

lucerne and medick both are nouns.

Word	Noun	Adjective	Verb	Adverb
lucerne	Yes	No	No	No
medick	Yes	No	No	No

As nouns, medick is a hypernym of lucerne; that is, medick is a word with a broader meaning than lucerne:

lucerne: important European leguminous forage plant with trifoliate leaves and blue-violet flowers grown widely as a pasture and hay crop
medick: any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves

Other hypernyms of lucerne include medic, trefoil.

lucerne (noun)	medick (noun)
important European leguminous forage plant with trifoliate leaves and blue-violet flowers grown widely as a pasture and hay crop	any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves