night jessamine vs shrub

night jessamine and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
night jessamine	Yes	No	No	No
shrub	Yes	No	No	No

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

night jessamine: West Indian evergreen shrub having clusters of funnel-shaped yellow-white flowers that are fragrant by night
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of night jessamine include bush.

night jessamine (noun)	shrub (noun)
West Indian evergreen shrub having clusters of funnel-shaped yellow-white flowers that are fragrant by night	a low woody perennial plant usually having several major stems