oriental roach vs oriental cockroach

oriental roach and oriental cockroach both are nouns.

Word	Noun	Adjective	Verb	Adverb
oriental roach	Yes	No	No	No
oriental cockroach	Yes	No	No	No

As nouns, oriental roach and oriental cockroach are synonyms defined as:

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

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

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