Medicago lupulina vs black medick

Medicago lupulina and black medick both are nouns.

Word	Noun	Adjective	Verb	Adverb
Medicago lupulina	Yes	No	No	No
black medick	Yes	No	No	No

As nouns, Medicago lupulina and black medick are synonyms defined as:

Medicago lupulina and black medick: prostrate European herb with small yellow flowers and curved black pods; naturalized in North America

Other synonyms of Medicago lupulina include hop clover, nonesuch clover, yellow trefoil.

Medicago lupulina (noun)	black medick (noun)
prostrate European herb with small yellow flowers and curved black pods; naturalized in North America	prostrate European herb with small yellow flowers and curved black pods; naturalized in North America