slipper spurge vs slipper plant

slipper spurge and slipper plant both are nouns.

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

As nouns, slipper spurge and slipper plant are synonyms defined as:

slipper spurge and slipper plant: any of several tropical American shrubby succulent plants resembling cacti but having foot-shaped bracts

slipper spurge (noun)	slipper plant (noun)
any of several tropical American shrubby succulent plants resembling cacti but having foot-shaped bracts	any of several tropical American shrubby succulent plants resembling cacti but having foot-shaped bracts