Leucothoe fontanesiana vs shrub

Leucothoe fontanesiana and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Leucothoe fontanesiana	Yes	No	No	No
shrub	Yes	No	No	No

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

Leucothoe fontanesiana: fast-growing evergreen shrub of southeastern United States having arching interlaced branches and racemes of white flowers
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Leucothoe fontanesiana include bush.

Leucothoe fontanesiana (noun)	shrub (noun)
fast-growing evergreen shrub of southeastern United States having arching interlaced branches and racemes of white flowers	a low woody perennial plant usually having several major stems