Can anyone tell me what is wrong my Nexus 4

What Does Google Services stand for? I have disabled the Google Sync. I don't use Google+ at all. I have also disabled the auto upload feature. P.S: I would also like to know how to uninstall system apps that come bundled with Nexus 4. All the Google stuff that I use are Maps, chat, Contacts, Calendar and Search. I would like to know the ways to remove everything else that comes preinstalled since they seem to be contributing a lot to my battery drain!