Liatris pycnostachya vs dense blazing star

Liatris pycnostachya and dense blazing star both are nouns.

Word	Noun	Adjective	Verb	Adverb
Liatris pycnostachya	Yes	No	No	No
dense blazing star	Yes	No	No	No

As nouns, Liatris pycnostachya and dense blazing star are synonyms defined as:

Liatris pycnostachya and dense blazing star: perennial of southeastern and central United States having very dense spikes of purple flowers; often cultivated for cut flowers

Liatris pycnostachya (noun)	dense blazing star (noun)
perennial of southeastern and central United States having very dense spikes of purple flowers; often cultivated for cut flowers	perennial of southeastern and central United States having very dense spikes of purple flowers; often cultivated for cut flowers