can't remove eclipses.

[home user]

(f32, preparing to upgrade to f33; Gnome)

A long time ago, almost certainly using dnf or yum, I installed 
"Eclipse" and something that starts with "Eclipse C/C++".

When I try to remove Eclipse, I get:
------
-bash.2[~]: dnf remove Eclipse
No match for argument: Eclipse
No packages marked for removal.
Dependencies resolved.
Nothing to do.
Complete!
-bash.3[~]:
-----
When I try "properties" to get the full name of what starts with 
"Eclipse C/C++", I get "Sorry! There are no details for that appliation.".

How do I remove these applications that I never use?

Thank-you in advance.
Bill.