subclass Dibranchia vs Dibranchia

subclass Dibranchia and Dibranchia both are nouns.

Word	Noun	Adjective	Verb	Adverb
subclass Dibranchia	Yes	No	No	No
Dibranchia	Yes	No	No	No

As nouns, subclass Dibranchia and Dibranchia are synonyms defined as:

subclass Dibranchia and Dibranchia: comprising all living cephalopods except the family Nautilidae: the orders Octopoda (octopuses) and Decapoda (squids and cuttlefish)

Other synonyms of subclass Dibranchia include Dibranchiata, subclass Dibranchiata.

subclass Dibranchia (noun)	Dibranchia (noun)
comprising all living cephalopods except the family Nautilidae: the orders Octopoda (octopuses) and Decapoda (squids and cuttlefish)	comprising all living cephalopods except the family Nautilidae: the orders Octopoda (octopuses) and Decapoda (squids and cuttlefish)