I thought a cord is round in section like a rope. The material shown in the picture is flat.I don't know about AmE, but I call it a cord.
You are right. A cord is more likely to be round. However, I am unused to the other term. (I can't help wondering why they don't use a cord.)A belt
I thought a cord is round in section like a rope. The material shown in the picture is flat.
A bead chain is more commonly used though.
But what would you call the one in the picture? It's flat like a strap or a belt. Would it not a misnomer to call it a pull cord despite the fact that a pull cord and the thing in the picture have the commonality that they are used to move shutters or blinds up and down?Definitely not a belt in relation to window blinds. They're typically called 'pull cords' if they're used to raise/lower the blinds.
If it's the things that controls the tilt/angle of the blinds, then I think it's called a tilt cord, or wand (if solid plastic rod).
I've never seen a flat one - they're usually either a round or beaded cord, while the tilt control is often a solid plastic rod or wand.
Back in the days when vertical-opening windows relied on counter weights hanging inside the window jamb, you pulled on a 'sash cord' to raise and lower the window. While counter-balanced windows are mostly a thing of the past, you can still buy 'sash cord' for other purposed at any place that sells cordage.
I wouldn't be surprised if some people called the blind cord a sash cord as well.
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