order Thymelaeales vs Combretaceae

order Thymelaeales and Combretaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Thymelaeales	Yes	No	No	No
Combretaceae	Yes	No	No	No

order Thymelaeales (noun)	Combretaceae (noun)
Myrtaceae, Combretaceae, Elaeagnaceae, Haloragidaceae, Melastomaceae, Lecythidaceae, Lythraceae, Rhizophoraceae, Onagraceae, Lecythidaceae, Punicaceae	a family of tropical trees and shrubs of the order Myrtales