suborder Petromyzoniformes vs suborder Hyperoartia

suborder Petromyzoniformes and suborder Hyperoartia both are nouns.

Word	Noun	Adjective	Verb	Adverb
suborder Petromyzoniformes	Yes	No	No	No
suborder Hyperoartia	Yes	No	No	No

As nouns, suborder Petromyzoniformes and suborder Hyperoartia are synonyms defined as:

suborder Petromyzoniformes and suborder Hyperoartia: lampreys as distinguished from hagfishes

Other synonyms of suborder Petromyzoniformes include Hyperoartia, Petromyzoniformes.

suborder Petromyzoniformes (noun)	suborder Hyperoartia (noun)
lampreys as distinguished from hagfishes	lampreys as distinguished from hagfishes