Medicago lupulina vs medic

Medicago lupulina and medic both are nouns.

Word	Noun	Adjective	Verb	Adverb
Medicago lupulina	Yes	No	No	No
medic	Yes	No	No	No

As nouns, medic is a hypernym of Medicago lupulina; that is, medic is a word with a broader meaning than Medicago lupulina:

Medicago lupulina: prostrate European herb with small yellow flowers and curved black pods; naturalized in North America
medic: any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves

Other hypernyms of Medicago lupulina include medick, trefoil.

Medicago lupulina (noun)	medic (noun)
prostrate European herb with small yellow flowers and curved black pods; naturalized in North America	a medical practitioner in the armed forces
	any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves