Naiadaceae vs monocot family

Naiadaceae and monocot family both are nouns.

Word	Noun	Adjective	Verb	Adverb
Naiadaceae	Yes	No	No	No
monocot family	Yes	No	No	No

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

Naiadaceae: monotypic family of aquatic plants having narrow leaves and small flowers
monocot family: family of flowering plants having a single cotyledon (embryonic leaf) in the seed

Other hypernyms of Naiadaceae include liliopsid family.

Naiadaceae (noun)	monocot family (noun)
monotypic family of aquatic plants having narrow leaves and small flowers	family of flowering plants having a single cotyledon (embryonic leaf) in the seed