he-huckleberry vs shrub

he-huckleberry and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
he-huckleberry	Yes	No	No	No
shrub	Yes	No	No	No

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

he-huckleberry: deciduous much-branched shrub with dense downy panicles of small bell-shaped white flowers
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of he-huckleberry include bush.

he-huckleberry (noun)	shrub (noun)
deciduous much-branched shrub with dense downy panicles of small bell-shaped white flowers	a low woody perennial plant usually having several major stems