standing area for shower

[Ju]

I know what is the bathtub for. How about the standing area only for taking shower?

Thank you.

[Barb_D]

It's just called a shower.

[JMurray]

If the area is enclosed it's sometimes called a shower cubicle.

not a teacher

[Raymott]

I know what is the bathtub for. Wrong
I know what the bathtub is for. Right.

Or the shower recess.

[bhaisahab]

The thing you stand on is often called a "shower tray".

[Rover_KE]

You'll also hear shower stall.

[emsr2d2]

In some countries, of course, there is just a shower attachment on the wall but no tray, no cubicle, no curtain, no screen. The whole room is tiled from top to bottom and has a drain hole in the middle of the floor. The room usually also contains the toilet and a washbasin. In that instance, the whole room can be referred to as a wetroom.