Greek clover vs genus Trigonella

Greek clover and genus Trigonella both are nouns.

Word	Noun	Adjective	Verb	Adverb
Greek clover	Yes	No	No	No
genus Trigonella	Yes	No	No	No

Greek clover (noun)	genus Trigonella (noun)
annual herb or southern Europe and eastern Asia having off-white flowers and aromatic seeds used medicinally and in curry	Old World genus of frequently aromatic herbs