order Heliozoa vs animal order

order Heliozoa and animal order both are nouns.

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

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

order Heliozoa (noun)	animal order (noun)
mostly freshwater protozoa	the order of animals