alpine sunflower vs wild flower

alpine sunflower and wild flower both are nouns.

Word	Noun	Adjective	Verb	Adverb
alpine sunflower	Yes	No	No	No
wild flower	Yes	No	No	No

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

alpine sunflower: whitish hairy plant with featherlike leaves and a few stout stems each bearing an especially handsome solitary large yellow flower head; mountainous regions north central United States
wild flower: wild or uncultivated flowering plant

Other hypernyms of alpine sunflower include wildflower.

alpine sunflower (noun)	wild flower (noun)
whitish hairy plant with featherlike leaves and a few stout stems each bearing an especially handsome solitary large yellow flower head; mountainous regions north central United States	wild or uncultivated flowering plant