Petasites hybridus vs Petasites vulgaris

Petasites hybridus and Petasites vulgaris both are nouns.

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

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

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

Other synonyms of Petasites hybridus include bog rhubarb, butterbur.

Petasites hybridus (noun)	Petasites vulgaris (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