Medicago echinus vs medic

Medicago echinus and medic both are nouns.

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

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

Medicago echinus: an annual of the Mediterranean area having spiny seed pods and leaves with dark spots
medic: any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves

Other hypernyms of Medicago echinus include medick, trefoil.

Medicago echinus (noun)	medic (noun)
an annual of the Mediterranean area having spiny seed pods and leaves with dark spots	a medical practitioner in the armed forces
	any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves