and the idiom 'groaning boards" (for a table covered with platters of food (one the 'groans' under the weight of food)

and while a rug in american english is a floor covering,(or in slang, a toupe or wig, especially a poor quality one) in British english is a covering (a blanket, a table cloth, a fancy cloth draped on a piano) which, occationaly, can be used to cover the floor!

my other obsession