Medicago lupulina vs yellow trefoil

Medicago lupulina and yellow trefoil both are nouns.

Word	Noun	Adjective	Verb	Adverb
Medicago lupulina	Yes	No	No	No
yellow trefoil	Yes	No	No	No

As nouns, Medicago lupulina and yellow trefoil are synonyms defined as:

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

Other synonyms of Medicago lupulina include black medick, hop clover, nonesuch clover.

Medicago lupulina (noun)	yellow trefoil (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