ragwort vs wild flower

ragwort and wild flower both are nouns.

Word	Noun	Adjective	Verb	Adverb
ragwort	Yes	No	No	No
wild flower	Yes	No	No	No

As nouns, wild flower is a hypernym of ragwort; that is, wild flower is a word with a broader meaning than ragwort:

Other hypernyms of ragwort include wildflower.

ragwort (noun)	wild flower (noun)
widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity	wild or uncultivated flowering plant
American ragwort with yellow flowers