order Thymelaeales vs Rhizophoraceae

order Thymelaeales and Rhizophoraceae both are nouns.

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

order Thymelaeales (noun)	Rhizophoraceae (noun)
Myrtaceae, Combretaceae, Elaeagnaceae, Haloragidaceae, Melastomaceae, Lecythidaceae, Lythraceae, Rhizophoraceae, Onagraceae, Lecythidaceae, Punicaceae	trees and shrubs that usually form dense jungles along tropical seacoasts