Biscutalla laevigata vs shrub

Biscutalla laevigata and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Biscutalla laevigata	Yes	No	No	No
shrub	Yes	No	No	No

As nouns, shrub is a hypernym of Biscutalla laevigata; that is, shrub is a word with a broader meaning than Biscutalla laevigata:

Biscutalla laevigata: plant of southeastern Europe having yellow flowers like those of mustard and pods with open valves resembling bucklers
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Biscutalla laevigata include bush.

Biscutalla laevigata (noun)	shrub (noun)
plant of southeastern Europe having yellow flowers like those of mustard and pods with open valves resembling bucklers	a low woody perennial plant usually having several major stems