Naias vs liliopsid genus

Naias and liliopsid genus both are nouns.

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

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

Naias: sole genus of the family Naiadaceae
liliopsid genus: genus of flowering plants having a single cotyledon (embryonic leaf) in the seed

Other hypernyms of Naias include monocot genus.

Naias (noun)	liliopsid genus (noun)
sole genus of the family Naiadaceae	genus of flowering plants having a single cotyledon (embryonic leaf) in the seed