switch-ivy vs shrub

switch-ivy and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
switch-ivy	Yes	No	No	No
shrub	Yes	No	No	No

As nouns, shrub is a hypernym of switch-ivy; that is, shrub is a word with a broader meaning than switch-ivy:

switch-ivy: 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 switch-ivy include bush.

switch-ivy (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