The opening paragraph sets you up for some revelation in the shape of crab usually being imitation crab. Instead it's just that Americans say lox when they mean

The opening paragraph sets you up for some revelation in the shape of crab usually being imitation crab. Instead it's just that Americans say lox when they mean smoked salmon and don't like the thing that 'lox' means in other countries. I don't think this is particularly revelatory - there's a dozen of these, like peperoncinis.