Swap windows in a frame

[Pankaj Jangid]

I have two windows in a frame. Is there a command to swap their
location?

I have a wide configuration and windows are left and right. Left is
where I work mostly and is in front of eyes. Right is for reference and
for occasional use. Sometimes, due to some commands, the work window
goes to right. And I want swap its location with the other buffer
window. How can I do that?

Regards
Pankaj