What is difference between detaching by pressing Y and P ? im beginners and got confused

@ 11:10, in the video tutorial, the hot keys for pressing Y and can we e press P ?

  • This won't be the best explanation, but here goes.  When you press P you create a new mesh object,  when you press Y it is still part of the original object.  The easiest way to see it is to try it yourself,

    create a cube

    go into edit, subdivide the cube

    on one section use P and another use Y,  you can no longer modify the P one, but you can the Y one

    go into object mode, move and scale the P one and nothing happens to the Y

    also look in the outliner tab area, the P created a new object and the Y doesn't.

    Hope this helped.