Indian arrowroot vs pia

Indian arrowroot and pia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Indian arrowroot	Yes	No	No	No
pia	Yes	No	No	No

As nouns, Indian arrowroot and pia are synonyms defined as:

Indian arrowroot and pia: perennial herb of East Indies to Polynesia and Australia; cultivated for its large edible root yielding Otaheite arrowroot starch

Other synonyms of Indian arrowroot include Tacca leontopetaloides, Tacca pinnatifida.

Indian arrowroot (noun)	pia (noun)
perennial herb of East Indies to Polynesia and Australia; cultivated for its large edible root yielding Otaheite arrowroot starch	perennial herb of East Indies to Polynesia and Australia; cultivated for its large edible root yielding Otaheite arrowroot starch