blinds [3]
Devices that roll or fold up, serving to filter or block light and provide privacy.
Venetian blind 
Shade made of adjustable horizontal laths containing a mechanism for controlling its height and orientation.
lath 
Thin flat strips made of aluminum, wood or plastic, the constituent parts of the shade.
bottom rail 
Bar that is heavier than the laths and serves as ballast to ease lowering the shade.
cord 
System of strings controlled by the lath tilt device and the lift cord; it supports the laths, changes their tilt angle and raises them.
headrail 
Grooved metal rod containing the shade’s mechanism and used to mount the blinds in front of a window.