Juncaceae vs liliopsid family

Juncaceae and liliopsid family both are nouns.

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

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

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

Other hypernyms of Juncaceae include monocot family.

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