suborder Petromyzoniformes vs Petromyzoniformes

suborder Petromyzoniformes and Petromyzoniformes both are nouns.

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

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

suborder Petromyzoniformes and Petromyzoniformes: lampreys as distinguished from hagfishes

Other synonyms of suborder Petromyzoniformes include Hyperoartia, suborder Hyperoartia.

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