order Isospondyli vs superorder Malacopterygii

order Isospondyli and superorder Malacopterygii both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Isospondyli	Yes	No	No	No
superorder Malacopterygii	Yes	No	No	No

order Isospondyli (noun)	superorder Malacopterygii (noun)
most primitive teleost fishes, all are soft-finned: salmon, trout, herring, shad, sardines, anchovies, whitefish, smelts, tarpon	an extensive group of teleost fishes having fins supported by flexible cartilaginous rays