butterbur vs Petasites hybridus

butterbur and Petasites hybridus both are nouns.

Word	Noun	Adjective	Verb	Adverb
butterbur	Yes	No	No	No
Petasites hybridus	Yes	No	No	No

As nouns, butterbur and Petasites hybridus are synonyms defined as:

butterbur and Petasites hybridus: small Eurasian herb having broad leaves and lilac-pink rayless flowers; found in moist areas

Other synonyms of butterbur include bog rhubarb, Petasites vulgaris.

butterbur (noun)	Petasites hybridus (noun)
small Eurasian herb having broad leaves and lilac-pink rayless flowers; found in moist areas	small Eurasian herb having broad leaves and lilac-pink rayless flowers; found in moist areas