It's like "accessibility". Several times (long ago) I've mistaken that for meaning "easy to access" and been disappointed to find it was useless. I still don't

It's like "accessibility". Several times (long ago) I've mistaken that for meaning "easy to access" and been disappointed to find it was useless. I still don't know what a "walkable neighborhood" is. Can't you walk just as easily in any neighborhood? When I read this article, I wasn't sure if affordable meant restricted to poor people, subsidized, or small (cheap) houses. I only learnt the answer from this thread. These words are only useful to the groups who already use them and impede understanding to outsiders.