Ononis spinosa vs rest-harrow

Ononis spinosa and rest-harrow both are nouns.

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

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

Ononis spinosa and rest-harrow: Eurasian plant having loose racemes of pink or purple flowers and spiny stems and tough roots

Other synonyms of Ononis spinosa include restharrow.

Ononis spinosa (noun)	rest-harrow (noun)
Eurasian plant having loose racemes of pink or purple flowers and spiny stems and tough roots	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