slipper spurge vs shrub

slipper spurge and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
slipper spurge	Yes	No	No	No
shrub	Yes	No	No	No

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

slipper spurge: any of several tropical American shrubby succulent plants resembling cacti but having foot-shaped bracts
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of slipper spurge include bush.

slipper spurge (noun)	shrub (noun)
any of several tropical American shrubby succulent plants resembling cacti but having foot-shaped bracts	a low woody perennial plant usually having several major stems