wolfbane vs wolfsbane

wolfbane and wolfsbane both are nouns.

Word	Noun	Adjective	Verb	Adverb
wolfbane	Yes	No	No	No
wolfsbane	Yes	No	No	No

As nouns, wolfbane and wolfsbane are synonyms defined as:

wolfbane and wolfsbane: poisonous Eurasian perennial herb with broad rounded leaves and yellow flowers and fibrous rootstock

Other synonyms of wolfbane include Aconitum lycoctonum, wolf's bane.

wolfbane (noun)	wolfsbane (noun)
poisonous Eurasian perennial herb with broad rounded leaves and yellow flowers and fibrous rootstock	poisonous Eurasian perennial herb with broad rounded leaves and yellow flowers and fibrous rootstock