pieplant vs rhubarb

pieplant and rhubarb both are nouns.

Word	Noun	Adjective	Verb	Adverb
pieplant	Yes	No	No	No
rhubarb	Yes	No	No	No

As nouns, pieplant and rhubarb are synonyms defined as:

pieplant and rhubarb: long pinkish sour leafstalks usually eaten cooked and sweetened

pieplant (noun)	rhubarb (noun)
long pinkish sour leafstalks usually eaten cooked and sweetened	long pinkish sour leafstalks usually eaten cooked and sweetened
	plants having long green or reddish acidic leafstalks growing in basal clumps; stems (and only the stems) are edible when cooked; leaves are poisonous