sloe vs shrub

sloe and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
sloe	Yes	No	No	No
shrub	Yes	No	No	No

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

Other hypernyms of sloe include bush.

sloe (noun)	shrub (noun)
small sour dark purple fruit of especially the Allegheny plum bush	a low woody perennial plant usually having several major stems
a thorny Eurasian bush with plumlike fruits
wild plum of northeastern United States having dark purple fruits with yellow flesh