Hyperoartia vs Petromyzoniformes

Hyperoartia and Petromyzoniformes both are nouns.

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

As nouns, Hyperoartia and Petromyzoniformes are synonyms defined as:

Hyperoartia and Petromyzoniformes: lampreys as distinguished from hagfishes

Other synonyms of Hyperoartia include suborder Hyperoartia, suborder Petromyzoniformes.

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