Medicago echinus vs Calvary clover

Medicago echinus and Calvary clover both are nouns.

Word	Noun	Adjective	Verb	Adverb
Medicago echinus	Yes	No	No	No
Calvary clover	Yes	No	No	No

As nouns, Medicago echinus and Calvary clover are synonyms defined as:

Medicago echinus and Calvary clover: an annual of the Mediterranean area having spiny seed pods and leaves with dark spots

Other synonyms of Medicago echinus include Medicago intertexta.

Medicago echinus (noun)	Calvary clover (noun)
an annual of the Mediterranean area having spiny seed pods and leaves with dark spots	an annual of the Mediterranean area having spiny seed pods and leaves with dark spots