mourning cloak vs Camberwell beauty

mourning cloak and Camberwell beauty both are nouns.

Word	Noun	Adjective	Verb	Adverb
mourning cloak	Yes	No	No	No
Camberwell beauty	Yes	No	No	No

As nouns, mourning cloak and Camberwell beauty are synonyms defined as:

mourning cloak and Camberwell beauty: of temperate regions; having dark purple wings with yellow borders

Other synonyms of mourning cloak include mourning cloak butterfly, Nymphalis antiopa.

mourning cloak (noun)	Camberwell beauty (noun)
of temperate regions; having dark purple wings with yellow borders	of temperate regions; having dark purple wings with yellow borders