Aster ptarmicoides vs upland white aster

Aster ptarmicoides and upland white aster both are nouns.

Word	Noun	Adjective	Verb	Adverb
Aster ptarmicoides	Yes	No	No	No
upland white aster	Yes	No	No	No

As nouns, Aster ptarmicoides and upland white aster are synonyms defined as:

Aster ptarmicoides and upland white aster: tufted rigid North American perennial with loose clusters of white flowers

Aster ptarmicoides (noun)	upland white aster (noun)
tufted rigid North American perennial with loose clusters of white flowers	tufted rigid North American perennial with loose clusters of white flowers