jap clover vs lespedeza

jap clover and lespedeza both are nouns.

Word	Noun	Adjective	Verb	Adverb
jap clover	Yes	No	No	No
lespedeza	Yes	No	No	No

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

jap clover: an annual of tropical Asia naturalized in United States
lespedeza: shrubby or herbaceous plants widely used for forage, soil improvement, and especially hay in southern United States

Other hypernyms of jap clover include bush clover.

jap clover (noun)	lespedeza (noun)
an annual of tropical Asia naturalized in United States	shrubby or herbaceous plants widely used for forage, soil improvement, and especially hay in southern United States