DS is almost 10 and his insistence on precision hasn't gone away at all. It hasn't gotten worse, at least, but I'm not sure that would have been possible. When he was a toddler and asked a question he would add "I want the long answer". It wasn't enough to have exactly the right word, every other scrap of information on the subject was required, as well. I know a lot more now about some very odd topics than I did when he was born.

Cookie, we have exactly the same vague/specific language issues. I have spent hours on conversations like 'yes, I know it's a compact SUV and not a car or SUV, but it's a bit awkward and time-consuming to say compact SUV and really is there anything else in our driveway to which I could be referring?'. I'm going to try your excellent approach.