Artemisia abrotanum vs southernwood

Artemisia abrotanum and southernwood both are nouns.

Word	Noun	Adjective	Verb	Adverb
Artemisia abrotanum	Yes	No	No	No
southernwood	Yes	No	No	No

As nouns, Artemisia abrotanum and southernwood are synonyms defined as:

Artemisia abrotanum and southernwood: shrubby European wormwood naturalized in North America; sometimes used in brewing beer

Artemisia abrotanum (noun)	southernwood (noun)
shrubby European wormwood naturalized in North America; sometimes used in brewing beer	shrubby European wormwood naturalized in North America; sometimes used in brewing beer