old woman vs Artemisia stelleriana

old woman and Artemisia stelleriana both are nouns.

Word	Noun	Adjective	Verb	Adverb
old woman	Yes	No	No	No
Artemisia stelleriana	Yes	No	No	No

As nouns, old woman and Artemisia stelleriana are synonyms defined as:

old woman and Artemisia stelleriana: herb with greyish leaves found along the east coast of North America; used as an ornamental plant

Other synonyms of old woman include beach wormwood, dusty miller.

old woman (noun)	Artemisia stelleriana (noun)
a woman who is old	herb with greyish leaves found along the east coast of North America; used as an ornamental plant
herb with greyish leaves found along the east coast of North America; used as an ornamental plant