monkshood vs Aconitum napellus

monkshood and Aconitum napellus both are nouns.

Word	Noun	Adjective	Verb	Adverb
monkshood	Yes	No	No	No
Aconitum napellus	Yes	No	No	No

As nouns, monkshood and Aconitum napellus are synonyms defined as:

monkshood and Aconitum napellus: a poisonous herb native to northern Europe having hooded blue-purple flowers; the dried leaves and roots yield aconite

Other synonyms of monkshood include helmet flower, helmetflower.

monkshood (noun)	Aconitum napellus (noun)
a poisonous herb native to northern Europe having hooded blue-purple flowers; the dried leaves and roots yield aconite	a poisonous herb native to northern Europe having hooded blue-purple flowers; the dried leaves and roots yield aconite