Cyrilliaceae vs exogen

Cyrilliaceae and exogen both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cyrilliaceae	Yes	No	No	No
exogen	Yes	No	No	No

As nouns, exogen is a hypernym of Cyrilliaceae; that is, exogen is a word with a broader meaning than Cyrilliaceae:

Cyrilliaceae: shrubs and trees with leathery leaves and small white flowers in racemes: genera Cyrilla and Cliftonia
exogen: flowering plant with two cotyledons; the stem grows by deposit on its outside

Other hypernyms of Cyrilliaceae include dicot, dicotyledon, magnoliopsid.

Cyrilliaceae (noun)	exogen (noun)
shrubs and trees with leathery leaves and small white flowers in racemes: genera Cyrilla and Cliftonia	flowering plant with two cotyledons; the stem grows by deposit on its outside