Arum and Taro plant

Arum noun - Any plant of the family Araceae; have small flowers massed on a spadix surrounded by a large spathe.

Taro plant and arum are semantically related. In some cases you can replace phrase "Taro plant" with "Arum", this terms are similar.

Taro plant noun - Herb of the Pacific islands grown throughout the tropics for its edible root and in temperate areas as an ornamental for its large glossy leaves.

Arum and taro plant are semantically related. You can use "Arum" instead a noun phrase "Taro plant".