wild flower vs angiosperm

wild flower and angiosperm both are nouns.

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

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

Other hypernyms of wild flower include wilding, flowering plant.

wild flower (noun)	angiosperm (noun)
wild or uncultivated flowering plant	plants having seeds in a closed ovary