Camberwell beauty vs mourning cloak

Camberwell beauty and mourning cloak both are nouns.

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

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

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

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

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