Calla palustris vs water arum

Calla palustris and water arum both are nouns.

Word	Noun	Adjective	Verb	Adverb
Calla palustris	Yes	No	No	No
water arum	Yes	No	No	No

As nouns, Calla palustris and water arum are synonyms defined as:

Calla palustris and water arum: plant of wetlands and bogs of temperate regions having small greenish flowers partly enclosed in a white spathe and red berries

Other synonyms of Calla palustris include wild calla.

Calla palustris (noun)	water arum (noun)
plant of wetlands and bogs of temperate regions having small greenish flowers partly enclosed in a white spathe and red berries	plant of wetlands and bogs of temperate regions having small greenish flowers partly enclosed in a white spathe and red berries