dense blazing star vs snakeroot

dense blazing star and snakeroot both are nouns.

Word	Noun	Adjective	Verb	Adverb
dense blazing star	Yes	No	No	No
snakeroot	Yes	No	No	No

As nouns, snakeroot is a hypernym of dense blazing star; that is, snakeroot is a word with a broader meaning than dense blazing star:

dense blazing star: perennial of southeastern and central United States having very dense spikes of purple flowers; often cultivated for cut flowers
snakeroot: any of various North American plants of the genus Liatris having racemes or panicles of small discoid flower heads

Other hypernyms of dense blazing star include blazing star, button snakeroot, gay-feather, gayfeather.

dense blazing star (noun)	snakeroot (noun)
perennial of southeastern and central United States having very dense spikes of purple flowers; often cultivated for cut flowers	a plant of the genus Sanicula having palmately compound leaves and unisexual flowers in panicled umbels followed by bristly fruit; reputed to have healing powers
	any of various North American plants of the genus Liatris having racemes or panicles of small discoid flower heads