Bloatware are applications that come preinstalled on the tab from the manufacturer/carrier that you will probably never use. They are a pain because they can't just be removed in most cases. They are also using precious space that can be utilized for something else. You will have to root your tab if you want to remove them.
Titanium needs root access for you to be able to do anything with it, you should first get familiar with what is root on Android.
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