Bivalvia vs Lamellibranchia

Bivalvia and Lamellibranchia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bivalvia	Yes	No	No	No
Lamellibranchia	Yes	No	No	No

As nouns, Bivalvia and Lamellibranchia are synonyms defined as:

Other synonyms of Bivalvia include class Bivalvia, class Lamellibranchia, class Pelecypoda.

Bivalvia (noun)	Lamellibranchia (noun)
oysters, clams, scallops, mussels	oysters, clams, scallops, mussels