Do you have that one guy/girl from a party you got linked with for a few weeks but did not show up for a day or so? If you do, then you must believe in ghosts. Or “ghosting”.
Those beings who showed up in full form but suddenly disappeared without a trace nor a word, they would often ignore texts and calls or any response.
One could point this as the other person being busy. But the popular consensus is that the other person cowards his/her way out of the connection without telling the person they are dating.