Korean lespedeza vs bush clover

Korean lespedeza and bush clover both are nouns.

Word	Noun	Adjective	Verb	Adverb
Korean lespedeza	Yes	No	No	No
bush clover	Yes	No	No	No

As nouns, bush clover is a hypernym of Korean lespedeza; that is, bush clover is a word with a broader meaning than Korean lespedeza:

Korean lespedeza: annual native to Korea but widely cultivated for forage and hay in hot dry regions
bush clover: shrubby or herbaceous plants widely used for forage, soil improvement, and especially hay in southern United States

Other hypernyms of Korean lespedeza include lespedeza.

Korean lespedeza (noun)	bush clover (noun)
annual native to Korea but widely cultivated for forage and hay in hot dry regions	shrubby or herbaceous plants widely used for forage, soil improvement, and especially hay in southern United States