class Lamellibranchia vs Bivalvia

class Lamellibranchia and Bivalvia both are nouns.

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

As nouns, class Lamellibranchia and Bivalvia are synonyms defined as:

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

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