cornflower aster vs stokes' aster

cornflower aster and stokes' aster both are nouns.

Word	Noun	Adjective	Verb	Adverb
cornflower aster	Yes	No	No	No
stokes' aster	Yes	No	No	No

As nouns, cornflower aster and stokes' aster are synonyms defined as:

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

Other synonyms of cornflower aster include Stokesia laevis.

cornflower aster (noun)	stokes' aster (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