Aster turbinellis vs aster

Aster turbinellis and aster both are nouns.

Word	Noun	Adjective	Verb	Adverb
Aster turbinellis	Yes	No	No	No
aster	Yes	No	No	No

As nouns, aster is a hypernym of Aster turbinellis; that is, aster is a word with a broader meaning than Aster turbinellis:

Aster turbinellis: violet-flowered perennial aster of central United States having solitary heads
aster: any of various chiefly fall-blooming herbs of the genus Aster with showy daisylike flowers

Aster turbinellis (noun)	aster (noun)
violet-flowered perennial aster of central United States having solitary heads	star-shaped structure formed in the cytoplasm of a cell having fibers like rays that surround the centrosome during mitosis
	any of various chiefly fall-blooming herbs of the genus Aster with showy daisylike flowers