Myxinoidea vs suborder Myxiniformes

Myxinoidea and suborder Myxiniformes both are nouns.

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

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

Myxinoidea and suborder Myxiniformes: hagfishes as distinguished from lampreys

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

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