arrow arum vs hydrophyte

arrow arum and hydrophyte both are nouns.

Word	Noun	Adjective	Verb	Adverb
arrow arum	Yes	No	No	No
hydrophyte	Yes	No	No	No

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

arrow arum: an aquatic plant of the genus Peltandra; North America
hydrophyte: a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth

Other hypernyms of arrow arum include aquatic plant, hydrophytic plant, water plant.

arrow arum (noun)	hydrophyte (noun)
an aquatic plant of the genus Peltandra; North America	a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth