Ericales vs Ericaceae

Ericales and Ericaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ericales	Yes	No	No	No
Ericaceae	Yes	No	No	No

As nouns, Ericaceae is a hyponym of Ericales; that is, Ericaceae is a word with a more specific, narrower meaning than Ericales:

Ericales: Ericaceae, Clethraceae, Diapensiaceae, Epacridaceae, Lennoaceae, Pyrolaceae, Monotropaceae
Ericaceae: heathers

Other hyponyms of Ericales include family Ericaceae, heath family.

Ericales (noun)	Ericaceae (noun)
Ericaceae, Clethraceae, Diapensiaceae, Epacridaceae, Lennoaceae, Pyrolaceae, Monotropaceae	heathers