artemisia vs estragon

artemisia and estragon both are nouns.

Word	Noun	Adjective	Verb	Adverb
artemisia	Yes	No	No	No
estragon	Yes	No	No	No

As nouns, estragon is a hyponym of artemisia; that is, estragon is a word with a more specific, narrower meaning than artemisia:

artemisia: any of various composite shrubs or herbs of the genus Artemisia having aromatic green or greyish foliage
estragon: aromatic perennial of southeastern Russia

Other hyponyms of artemisia include Artemisia dracunculus, tarragon.

artemisia (noun)	estragon (noun)
any of various composite shrubs or herbs of the genus Artemisia having aromatic green or greyish foliage	fresh leaves (or leaves preserved in vinegar) used as seasoning
	aromatic perennial of southeastern Russia