arum lily vs calla lily

arum lily and calla lily both are nouns.

Word	Noun	Adjective	Verb	Adverb
arum lily	Yes	No	No	No
calla lily	Yes	No	No	No

As nouns, arum lily and calla lily are synonyms defined as:

arum lily and calla lily: South African plant widely cultivated for its showy pure white spathe and yellow spadix

Other synonyms of arum lily include calla, Zantedeschia aethiopica.

arum lily (noun)	calla lily (noun)
South African plant widely cultivated for its showy pure white spathe and yellow spadix	South African plant widely cultivated for its showy pure white spathe and yellow spadix