suborder Myxiniformes vs suborder Hyperotreta

suborder Myxiniformes and suborder Hyperotreta both are nouns.

Word	Noun	Adjective	Verb	Adverb
suborder Myxiniformes	Yes	No	No	No
suborder Hyperotreta	Yes	No	No	No

As nouns, suborder Myxiniformes and suborder Hyperotreta are synonyms defined as:

suborder Myxiniformes and suborder Hyperotreta: hagfishes as distinguished from lampreys

Other synonyms of suborder Myxiniformes include Hyperotreta, Myxiniformes, Myxinoidea, Myxinoidei, suborder Myxinoidei.

suborder Myxiniformes (noun)	suborder Hyperotreta (noun)
hagfishes as distinguished from lampreys	hagfishes as distinguished from lampreys