Elodea vs monocot genus

Elodea and monocot genus both are nouns.

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

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

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

Other hypernyms of Elodea include liliopsid genus.

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