Scabiosa arvensis vs scabious

Scabiosa arvensis and scabious both are nouns.

Word	Noun	Adjective	Verb	Adverb
Scabiosa arvensis	Yes	No	No	No
scabious	Yes	No	No	No

As nouns, scabious is a hypernym of Scabiosa arvensis; that is, scabious is a word with a broader meaning than Scabiosa arvensis:

Scabiosa arvensis: perennial having bluish-lilac flowers; introduced in the eastern United States
scabious: any of various plants of the genus Scabiosa

Other hypernyms of Scabiosa arvensis include scabiosa.

Scabiosa arvensis (noun)	scabious (noun)
perennial having bluish-lilac flowers; introduced in the eastern United States	any of various plants of the genus Scabiosa