sticky aster vs wild flower

sticky aster and wild flower both are nouns.

Word	Noun	Adjective	Verb	Adverb
sticky aster	Yes	No	No	No
wild flower	Yes	No	No	No

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

sticky aster: wild aster having leafy stems and flower heads with narrow bright reddish-lavender or purple rays; western Colorado to Arizona
wild flower: wild or uncultivated flowering plant

Other hypernyms of sticky aster include wildflower.

sticky aster (noun)	wild flower (noun)
wild aster having leafy stems and flower heads with narrow bright reddish-lavender or purple rays; western Colorado to Arizona	wild or uncultivated flowering plant