Liliaceae vs Lilium

Liliaceae and Lilium both are nouns.

Word	Noun	Adjective	Verb	Adverb
Liliaceae	Yes	No	No	No
Lilium	Yes	No	No	No

Liliaceae (noun)	Lilium (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	type genus of Liliaceae