I'm fairly certain "dump" is the more commonly used word in the UK. There's the classic children's novel "Stig of the Dump" published in 1963.
There's definitely cases where UK English has adopted a new word but American English hasn't. I was surprised to see the word "coupon" used in old UK literature. "Voucher" is the more common word nowadays. People would accuse you of being Americanised if you said coupon.
There's definitely cases where UK English has adopted a new word but American English hasn't. I was surprised to see the word "coupon" used in old UK literature. "Voucher" is the more common word nowadays. People would accuse you of being Americanised if you said coupon.