genus Elodea vs liliopsid genus

genus Elodea and liliopsid genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Elodea	Yes	No	No	No
liliopsid genus	Yes	No	No	No

As nouns, liliopsid genus is a hypernym of genus Elodea; that is, liliopsid genus is a word with a broader meaning than genus Elodea:

genus Elodea: submerged freshwater perennials
liliopsid genus: genus of flowering plants having a single cotyledon (embryonic leaf) in the seed

Other hypernyms of genus Elodea include monocot genus.

genus Elodea (noun)	liliopsid genus (noun)
submerged freshwater perennials	genus of flowering plants having a single cotyledon (embryonic leaf) in the seed