"Yum" has sentimental value and is practically a trademark, so
1. yuma - Yellowdog Updater, Modified Again
2. yum2 - Yellowdog Updater, Modified II
3. yumrelo - Yellowdog Updater, Modified Reloaded
6. yum-ng - Yellowdog Updater, Modified NG (Next Generation)
5. yum-ak - Yellowdog Updater, Modified AK (Ales Kozumplik)
4. yum-novus - Yellowdog Updater, Modified New
7. yummy - Yellowdog Updater, Modified My