Thanks so much, I didn't know there was a term for that! And it was hilarious reading about the UK's use of "popular orange vegetable" to refer to "carrots", a

Thanks so much, I didn't know there was a term for that! And it was hilarious reading about the UK's use of "popular orange vegetable" to refer to "carrots", a great example of taking this technique to the extreme. Fortunately, I don't think it's as bad to do that in fiction, because the author is going to establish how the world works to begin with, and therefore makes sure you have enough to know whether the alternate phrases mean that character or someone else, so, at worst, it's just cringey rather than confusing.