Juncaceae vs monocot family

Juncaceae and monocot family both are nouns.

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

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

Juncaceae: tufted herbs resembling grasses: rushes
monocot family: family of flowering plants having a single cotyledon (embryonic leaf) in the seed

Other hypernyms of Juncaceae include liliopsid family.

Juncaceae (noun)	monocot family (noun)
tufted herbs resembling grasses: rushes	family of flowering plants having a single cotyledon (embryonic leaf) in the seed