goldenbush vs wild flower

goldenbush and wild flower both are nouns.

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

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

Other hypernyms of goldenbush include wildflower.

goldenbush (noun)	wild flower (noun)
a plant of the genus Haplopappus	wild or uncultivated flowering plant
any of various much-branched yellow-flowered shrubs of the genus Chrysothamnus; western North America