family Nyssaceae vs order Myrtales

family Nyssaceae and order Myrtales both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Nyssaceae	Yes	No	No	No
order Myrtales	Yes	No	No	No

family Nyssaceae (noun)	order Myrtales (noun)
a family of dicotyledonous trees of order Myrtales that includes the sour gum trees	Myrtaceae, Combretaceae, Elaeagnaceae, Haloragidaceae, Melastomaceae, Lecythidaceae, Lythraceae, Rhizophoraceae, Onagraceae, Lecythidaceae, Punicaceae