I noticed in Ubuntu that the following commands go to seemingly different locations in the file system, but the locations have the same files:

 cd /
 cd //
ls-ing from both locations produces the same result:

 vm@virtual-machine://$ ls
 bin dev initrd.img lib64 mnt root snap sys var
 boot etc initrd.img.old lost+found opt run srv tmp vmlinuz
 cdrom home lib media proc sbin swapfile usr

Is there a distinction in the behaviors in these to seemingly different, yet the same file paths? 

Note: '`cd ///`' is not a valid file path, but '`//usr/`' and '`//bin/`' are valid paths. 
Note-2: So running cd .. in in each points to themselves, so `// -> cd .. -> //` and `/ -> cd .. -> /`