cornflower aster vs Stokesia laevis

cornflower aster and Stokesia laevis both are nouns.

Word	Noun	Adjective	Verb	Adverb
cornflower aster	Yes	No	No	No
Stokesia laevis	Yes	No	No	No

As nouns, cornflower aster and Stokesia laevis are synonyms defined as:

cornflower aster and Stokesia laevis: erect perennial of southeastern United States having large heads of usually blue flowers

Other synonyms of cornflower aster include stokes' aster.

cornflower aster (noun)	Stokesia laevis (noun)
erect perennial of southeastern United States having large heads of usually blue flowers	erect perennial of southeastern United States having large heads of usually blue flowers