feather-foil vs hydrophyte

feather-foil and hydrophyte both are nouns.

Word	Noun	Adjective	Verb	Adverb
feather-foil	Yes	No	No	No
hydrophyte	Yes	No	No	No

As nouns, hydrophyte is a hypernym of feather-foil; that is, hydrophyte is a word with a broader meaning than feather-foil:

feather-foil: a plant of the genus Hottonia
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 feather-foil include aquatic plant, hydrophytic plant, water plant.

feather-foil (noun)	hydrophyte (noun)
a plant of the genus Hottonia	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