Perciformes vs perch

Perciformes and perch both are nouns.

Word	Noun	Adjective	Verb	Adverb
Perciformes	Yes	No	No	No
perch	Yes	No	Yes	No

Perciformes (noun)	perch (noun)
one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna	spiny-finned freshwater food and game fishes
	any of numerous spiny-finned fishes of various families of the order Perciformes
	support consisting of a branch or rod that serves as a resting place (especially for a bird)
	any of numerous fishes of America and Europe
	an elevated place serving as a seat
	a linear measure of 16.5 feet
	a square rod of land