rhubarb vs pieplant

rhubarb and pieplant both are nouns.

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

As nouns, rhubarb and pieplant are synonyms defined as:

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

rhubarb (noun)	pieplant (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