Hi there Anonymous
Abyssinia is the Highfields estate towards the north of Berwick, so named because it was built at the time of the Italian invasion of Abyssinia (now Ethiopia) in 1936.
Czech is a name for the Spittal Hall estate off Billendean Terrace, thus named because of the Nazi invasion of the Sudetenland, part of Czechoslovakia, in 1938.
An Arab is a “native” of the Greenses. The name probably originated from the bearded, swarthy appearance of the resident fishermen.
In the early 1980s, a Sunday league football team went by the name Greenses Arabs.
Hope that wins any bets for you!