Aepyorniformes vs order Aepyorniformes

Aepyorniformes and order Aepyorniformes both are nouns.

Word	Noun	Adjective	Verb	Adverb
Aepyorniformes	Yes	No	No	No
order Aepyorniformes	Yes	No	No	No

As nouns, Aepyorniformes and order Aepyorniformes are synonyms defined as:

Aepyorniformes and order Aepyorniformes: huge extinct flightless birds: elephant birds

Aepyorniformes (noun)	order Aepyorniformes (noun)
huge extinct flightless birds: elephant birds	huge extinct flightless birds: elephant birds