What is difference between clone and duplicate?
They both duplicate fields. Clone just lets you select how many copies you want. Eg if you want to duplicate a field (or multiple fields) several times, then just select the field(s) and use clone.
What does duplicate do?
If you duplicate something that has already been done, you repeat or copy it. His task will be to duplicate his success overseas here at home. To duplicate something which has been written, drawn, or recorded onto tape means to make exact copies of it. ...