tansy leaf aster vs wildflower

tansy leaf aster and wildflower both are nouns.

Word	Noun	Adjective	Verb	Adverb
tansy leaf aster	Yes	No	No	No
wildflower	Yes	No	No	No

As nouns, wildflower is a hypernym of tansy leaf aster; that is, wildflower is a word with a broader meaning than tansy leaf aster:

tansy leaf aster: wild aster with fernlike leaves and flower heads with very narrow bright purple rays; Alberta to Texas and Mexico
wildflower: wild or uncultivated flowering plant

Other hypernyms of tansy leaf aster include wild flower.

tansy leaf aster (noun)	wildflower (noun)
wild aster with fernlike leaves and flower heads with very narrow bright purple rays; Alberta to Texas and Mexico	wild or uncultivated flowering plant