iris family vs family Iridaceae

iris family and family Iridaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
iris family	Yes	No	No	No
family Iridaceae	Yes	No	No	No

As nouns, iris family and family Iridaceae are synonyms defined as:

iris family and family Iridaceae: large family of usually perennial geophytic herbs with rhizomes or corms or bulbs

Other synonyms of iris family include Iridaceae.

iris family (noun)	family Iridaceae (noun)
large family of usually perennial geophytic herbs with rhizomes or corms or bulbs	large family of usually perennial geophytic herbs with rhizomes or corms or bulbs