oriental roach vs blackbeetle

oriental roach and blackbeetle both are nouns.

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

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

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

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

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