Aepyorniformes vs animal order

Aepyorniformes and animal order both are nouns.

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

As nouns, animal order is a hypernym of Aepyorniformes; that is, animal order is a word with a broader meaning than Aepyorniformes:

Aepyorniformes (noun)	animal order (noun)
huge extinct flightless birds: elephant birds	the order of animals