Why are these called 5 way binding posts? I count four!

The terminals on my vintage speakers are 2-way. Or, is it 3? I was feeling pretty good about them when I woke up this morning. Now I wonder.

Okay. It’s time to get real here.

The term "bind" is defined as to "tie or fasten (something) tightly." Anyone who’s tried to shove a Dyson in between a wall and their speakers, whacked a cable, and dislodged a banana connector "binded" to their speaker knows that it is not fastened "tightly."

A more correct engineering description of a banana connection is referred to as an "interference fit". See linked video.

https://www.youtube.com/watch?v=KwpEgwiX850

Tithes may bind. Banana connectors do not.

I vote for 4-way + 1.