On the topic of finding words for things that ought to have a word for them, I strongly recommend Douglas Adams’s ‘Meaning of Liff’ and ‘Deeper Meaning of Liff’.
Although he doesn’t cover sidewalk dancing, he does have a long discussion on words the cover the situation where you recognise somebody that you are approaching from a distance, and then have to feign not noticing them until the last moment, to avoid having to keep acknowledging them as you approach.
Incidentally, for those who don’t know, this is the same Douglas Adams who wrote the Hitchhikers’ Guide to the Galaxy.
Paul Dickson’s book Family Words has some that people use in in-the-family contexts, but I don’t recall most of them right now, and the book is at home.
Just as a reminder: this is one reason we like to have a link to the column in the OP. Saves lots of redundancies, keeps us (more or less) on the same page. I’ve added a link.