stagger bush vs shrub

stagger bush and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
stagger bush	Yes	No	No	No
shrub	Yes	No	No	No

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

stagger bush: deciduous shrub of coastal plain of the eastern United States having nodding pinkish-white flowers; poisonous to stock
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of stagger bush include bush.

stagger bush (noun)	shrub (noun)
deciduous shrub of coastal plain of the eastern United States having nodding pinkish-white flowers; poisonous to stock	a low woody perennial plant usually having several major stems