calla vs arum lily

calla and arum lily both are nouns.

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

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

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

Other synonyms of calla include calla lily, Zantedeschia aethiopica.

calla (noun)	arum 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