tannia vs arum

tannia and arum both are nouns.

Word	Noun	Adjective	Verb	Adverb
tannia	Yes	No	No	No
arum	Yes	No	No	No

As nouns, arum is a hypernym of tannia; that is, arum is a word with a broader meaning than tannia:

tannia: tropical American aroid having edible tubers that are cooked and eaten like yams or potatoes
arum: any plant of the family Araceae; have small flowers massed on a spadix surrounded by a large spathe

Other hypernyms of tannia include aroid.

tannia (noun)	arum (noun)
tropical American aroid having edible tubers that are cooked and eaten like yams or potatoes	any plant of the family Araceae; have small flowers massed on a spadix surrounded by a large spathe
	starch resembling sago that is obtained from cuckoopint root