The move is something that you would do when you want to get a file and move it to another place. It can be located in another folder, and you would like to place it in another folder easily. A copy is known to be another thing that you can do when you would like to have a replica of the same file to be placed in another folder.
For example, you would like the same file to be in another folder without having to remove that same file from a particular folder; you will definitely use a copy for that. There are instances when you would need to have copies especially if you feel that another folder may be in danger of being deleted. A lot of digital files now can easily be moved or deleted.