Cephalaspida vs suborder Cephalaspida

Cephalaspida and suborder Cephalaspida both are nouns.

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

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

Cephalaspida and suborder Cephalaspida: extinct group of armored fish-like vertebrates; taxonomy is not clear

Other synonyms of Cephalaspida include Osteostraci, suborder Osteostraci.

Cephalaspida (noun)	suborder Cephalaspida (noun)
extinct group of armored fish-like vertebrates; taxonomy is not clear	extinct group of armored fish-like vertebrates; taxonomy is not clear