order Dinornithiformes vs Dinornithiformes

order Dinornithiformes and Dinornithiformes both are nouns.

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

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

order Dinornithiformes and Dinornithiformes: a ratite bird order: recently extinct flightless birds of New Zealand

order Dinornithiformes (noun)	Dinornithiformes (noun)
a ratite bird order: recently extinct flightless birds of New Zealand	a ratite bird order: recently extinct flightless birds of New Zealand