Texas star vs sabbatia

Texas star and sabbatia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Texas star	Yes	No	No	No
sabbatia	Yes	No	No	No

As nouns, sabbatia is a hypernym of Texas star; that is, sabbatia is a word with a broader meaning than Texas star:

Texas star: prairie herb with solitary lilac-colored flowers
sabbatia: any of various plants of the genus Sabbatia having usually pink cymose flowers; occur from acid bogs to brackish marshes

Texas star (noun)	sabbatia (noun)
Texas annual with coarsely pinnatifid leaves; cultivated for its showy radiate yellow flower heads	any of various plants of the genus Sabbatia having usually pink cymose flowers; occur from acid bogs to brackish marshes
prairie herb with solitary lilac-colored flowers