Jupiter's beard vs shrub

Jupiter's beard and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Jupiter's beard	Yes	No	No	No
shrub	Yes	No	No	No

As nouns, shrub is a hypernym of Jupiter's beard; that is, shrub is a word with a broader meaning than Jupiter's beard:

Jupiter's beard: silvery hairy European shrub with evergreen foliage and pale yellow flowers
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Jupiter's beard include bush.

Jupiter's beard (noun)	shrub (noun)
silvery hairy European shrub with evergreen foliage and pale yellow flowers	a low woody perennial plant usually having several major stems