suborder Scombroidea vs Percomorphi

suborder Scombroidea and Percomorphi both are nouns.

Word	Noun	Adjective	Verb	Adverb
suborder Scombroidea	Yes	No	No	No
Percomorphi	Yes	No	No	No

suborder Scombroidea (noun)	Percomorphi (noun)
mackerels, tunas, albacores, bonitos, swordfishes, sailfishes	one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna