spindleberry tree vs shrub

spindleberry tree and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
spindleberry tree	Yes	No	No	No
shrub	Yes	No	No	No

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

spindleberry tree: any shrubby trees or woody vines of the genus Euonymus having showy usually reddish berries
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of spindleberry tree include bush.

spindleberry tree (noun)	shrub (noun)
any shrubby trees or woody vines of the genus Euonymus having showy usually reddish berries	a low woody perennial plant usually having several major stems