Artemisia vulgaris vs mugwort

Artemisia vulgaris and mugwort both are nouns.

Word	Noun	Adjective	Verb	Adverb
Artemisia vulgaris	Yes	No	No	No
mugwort	Yes	No	No	No

As nouns, mugwort is a hypernym of Artemisia vulgaris; that is, mugwort is a word with a broader meaning than Artemisia vulgaris:

Artemisia vulgaris: European tufted aromatic perennial herb having hairy red or purple stems and dark green leaves downy white below and red-brown florets
mugwort: any of several weedy composite plants of the genus Artemisia

Artemisia vulgaris (noun)	mugwort (noun)
European tufted aromatic perennial herb having hairy red or purple stems and dark green leaves downy white below and red-brown florets	any of several weedy composite plants of the genus Artemisia