oriental cockroach vs Blatta orientalis

oriental cockroach and Blatta orientalis both are nouns.

Word	Noun	Adjective	Verb	Adverb
oriental cockroach	Yes	No	No	No
Blatta orientalis	Yes	No	No	No

As nouns, oriental cockroach and Blatta orientalis are synonyms defined as:

oriental cockroach and Blatta orientalis: dark brown cockroach originally from orient now nearly cosmopolitan in distribution

Other synonyms of oriental cockroach include Asiatic cockroach, blackbeetle, oriental roach.

oriental cockroach (noun)	Blatta orientalis (noun)
dark brown cockroach originally from orient now nearly cosmopolitan in distribution	dark brown cockroach originally from orient now nearly cosmopolitan in distribution