rest-harrow vs Ononis repens

rest-harrow and Ononis repens both are nouns.

Word	Noun	Adjective	Verb	Adverb
rest-harrow	Yes	No	No	No
Ononis repens	Yes	No	No	No

As nouns, rest-harrow and Ononis repens are synonyms defined as:

rest-harrow and Ononis repens: European woody plant having pink flowers and unifoliate leaves and long tough roots; spreads by underground runners

Other synonyms of rest-harrow include restharrow.

rest-harrow (noun)	Ononis repens (noun)
European woody plant having pink flowers and unifoliate leaves and long tough roots; spreads by underground runners	European woody plant having pink flowers and unifoliate leaves and long tough roots; spreads by underground runners
Eurasian plant having loose racemes of pink or purple flowers and spiny stems and tough roots