meadow salsify vs wild flower

meadow salsify and wild flower both are nouns.

Word	Noun	Adjective	Verb	Adverb
meadow salsify	Yes	No	No	No
wild flower	Yes	No	No	No

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

meadow salsify: weedy European annual with yellow flowers; naturalized in United States
wild flower: wild or uncultivated flowering plant

Other hypernyms of meadow salsify include wildflower.

meadow salsify (noun)	wild flower (noun)
weedy European annual with yellow flowers; naturalized in United States	wild or uncultivated flowering plant