At terminal:

me@Ubuntu-Home-PC:~$ aptitude search ~icinnamon
i A cinnamon-control-center - configuration applets for the Cinnamon desktop
i A cinnamon-control-center-data - configuration applets for Cinnamon - data files
i A cinnamon-control-center-goa - configuration applets for the Cinnamon desktop - Gnome
i A cinnamon-desktop-data - Common files for Cinnamon desktop apps
i A cinnamon-l10n - Translation files for the Cinnamon desktop
i A cinnamon-screensaver - Cinnamon screen saver and locker
i A cinnamon-session - Cinnamon Session Manager - Minimal runtime
i A cinnamon-session-common - Cinnamon Session Manager - common files
i A cinnamon-settings-daemon - daemon handling the Cinnamon session settings
i A gir1.2-cinnamondesktop-3.0 - Introspection data for CinnamonDesktop
i A libcinnamon-control-center1 - library used by configuration applets for Cinnamon
i A libcinnamon-desktop4 - Cinnamon library for loading .desktop files
i A libcinnamon-menu-3-0 - Cinnamon implementation of the freedesktop menu specif
me@Ubuntu-Home-PC:~$

So apparently cinnamon is on the system.

However:
me@Ubuntu-Home-PC:~$ sudo aptitude remove cinnamon
Package cinnamon is not installed, so it will not be removed
Package cinnamon is not installed, so it will not be removed
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.
or

me@Ubuntu-Home-PC:~$ sudo aptitude remove cinnamon*
Couldn't find any package whose name or description matched "cinnamon*"
Unable to apply some actions, aborting

Finally:
me@Ubuntu-Home-PC:~$ sudo aptitude remove ~icinnamon*
The following packages will be REMOVED:
cinnamon-control-center cinnamon-control-center-data{u} cinnamon-control-center-goa{u}
cinnamon-desktop-data{u} cinnamon-l10n{u} cinnamon-screensaver{u} cinnamon-session
cinnamon-session-common{u} cinnamon-settings-daemon{u} gettext{u} gir1.2-cinnamondesktop-3.0
gir1.2-cvc-1.0{u} gir1.2-gkbd-3.0{u} gir1.2-xapp-1.0{u} gir1.2-xkl-1.0{u} gist{u} hddtemp{u}
hwdata{u} inxi{u} iso-flags-png-320x240{u} libcinnamon-control-center1 libcinnamon-desktop4
libcinnamon-menu-3-0 libcpanel-json-xs-perl{u} libcroco3{u} libcscreensaver0{u} libcvc0{u}
libmuffin0{u} libxapp1{u} muffin{u} muffin-common{u} python3-psutil{u} python3-setproctitle{u}
python3-tinycss{u} python3-xapp{u} python3-xlib{u} ruby-json{u} tree{u} xapps-common{u}
0 packages upgraded, 0 newly installed, 39 to remove and 0 not upgraded.
Need to get 0 B of archives. After unpacking 58.7 MB will be freed.
Do you want to continue? [Y/n/?]





Am I interpreting this correctly, that by adding the ~i, the package name and the wildcard, I would be forcing the removal of these items and should I be removing them is the big question ?