Rumex obtusifolius vs bitter dock

Rumex obtusifolius and bitter dock both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rumex obtusifolius	Yes	No	No	No
bitter dock	Yes	No	No	No

As nouns, Rumex obtusifolius and bitter dock are synonyms defined as:

Rumex obtusifolius and bitter dock: European dock with broad obtuse leaves and bitter rootstock common as a weed in North America

Other synonyms of Rumex obtusifolius include broad-leaved dock, yellow dock.

Rumex obtusifolius (noun)	bitter dock (noun)
European dock with broad obtuse leaves and bitter rootstock common as a weed in North America	European dock with broad obtuse leaves and bitter rootstock common as a weed in North America