Liliaceae vs family Convallariaceae

Liliaceae and family Convallariaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Liliaceae	Yes	No	No	No
family Convallariaceae	Yes	No	No	No

Liliaceae (noun)	family Convallariaceae (noun)
includes species sometimes divided among the following families: Alliaceae, Aloeaceae, Alstroemeriaceae, Aphyllanthaceae, Asparagaceae, Asphodelaceae, Colchicaceae, Convallariaceae, Hemerocallidaceae, Hostaceae, Hyacinthaceae, Melanthiaceae, Ruscaceae, Smilacaceae, Tecophilaeacea, Xanthorrhoeaceae	one of many subfamilies into which some classification systems subdivide the Liliaceae but not widely accepted