The cloning and propagation tags seem to be very similar to me. Unfortunately there is no tag wiki excerpt or tag wiki for cloning so it is not clear what is its purpose.
There are only 4 questions tagged with cloning and they seem to be general propagation questions. On the contrary there are 210 questions tagged with propagation. There is 1 that is tagged with both.
Should cloning be a synonym to propagation or we just need a good tag wiki that would describe the difference?