cryptocoryne vs hydrophyte

cryptocoryne and hydrophyte both are nouns.

Word	Noun	Adjective	Verb	Adverb
cryptocoryne	Yes	No	No	No
hydrophyte	Yes	No	No	No

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

cryptocoryne: any plant of the genus Cryptocoryne; evergreen perennials growing in fresh or brackish water; tropical Asia
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 cryptocoryne include aquatic plant, hydrophytic plant, water plant.

cryptocoryne (noun)	hydrophyte (noun)
any plant of the genus Cryptocoryne; evergreen perennials growing in fresh or brackish water; tropical Asia	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