dense blazing star vs Liatris pycnostachya

dense blazing star and Liatris pycnostachya both are nouns.

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

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

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

dense blazing star (noun)	Liatris pycnostachya (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