Difference between Mac OS X and Applications cleaner?

CCleaner for Mac
1

Noob here, What is the difference between Mac OS X cleaner and Applications cleaner? They appear to do the same thing. Using CCleaner Pro 1.18.30

2

if you are meaning AppCleaner then that is a tool for uninstalling apps, and searching for/removing any leftovers from the uninstall. It doesn't remove any other junk.

CCleaner is a junk cleaner that removes junk files, temporary files, logfiles, browser history, cookies, etc. 

It also includes other tools including an uninstall tool (but that just uninstalls the app and doesn't search for uninstall leftovers).

If you want an alternative to AppCleaner then Revo Uninstaller for Mac is a good one, there are others.