class Crustacea vs Crustacea

class Crustacea and Crustacea both are nouns.

Word	Noun	Adjective	Verb	Adverb
class Crustacea	Yes	No	No	No
Crustacea	Yes	No	No	No

As nouns, class Crustacea and Crustacea are synonyms defined as:

class Crustacea and Crustacea: class of mandibulate arthropods including: lobsters, crabs, shrimps, woodlice, barnacles, decapods, water fleas

class Crustacea (noun)	Crustacea (noun)
class of mandibulate arthropods including: lobsters, crabs, shrimps, woodlice, barnacles, decapods, water fleas	class of mandibulate arthropods including: lobsters, crabs, shrimps, woodlice, barnacles, decapods, water fleas