order Thymelaeales vs Myrtaceae

order Thymelaeales and Myrtaceae both are nouns.

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

order Thymelaeales (noun)	Myrtaceae (noun)
Myrtaceae, Combretaceae, Elaeagnaceae, Haloragidaceae, Melastomaceae, Lecythidaceae, Lythraceae, Rhizophoraceae, Onagraceae, Lecythidaceae, Punicaceae	trees and shrubs yielding a fragrant oil