Ganoidei vs animal order

Ganoidei and animal order both are nouns.

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

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

Ganoidei: a group of mostly extinct primitive bony fishes characterized by armor-like bony scales
animal order: the order of animals

Ganoidei (noun)	animal order (noun)
a group of mostly extinct primitive bony fishes characterized by armor-like bony scales	the order of animals