Stay
A dock.
I'm not exactly sure what is meant by a bar. There are metal pipes sunk in cement used to tie your horse. That is called a tie bar. It is also referred to as a 'hitching post' and can be wood, metal, or plastic depending upon where and when you find it.
quafar
It's usually called a cleat, generally a horn cleat.
A stain on a shirt or tie..........
A bolo tie.
A pier is a structure built to extend into (usually) tidal waters to allow ships and boats to tie up even at low water. In many cases today they are similar structures built for entertainment purposes.
Eventual wear and tear (metal stress), as well as rust, will cause a tie rod break.
ascot.
lie tie
Knot tiers