By default, Android 4 and Android 5 phones and tablets sync information from many of Google's services, including Google Calendar, Gmail, Chrome bookmarks, Picasa Web albums and Google Play Music uploads. To stop Android from syncing any or all of this information, deselect the Google components you don't want updated in the Settings app. If you want to stop not only Google but all accounts from syncing, turn off automatic synchronization.
Un-Sync Google Components
Open the Settings app or menu on your device and tap "Google" in the Accounts list. Some devices display accounts inside the Personal section of the Settings.
Select the Google account you want to stop syncing.
Uncheck the box by each Google service you want to un-sync. To completely stop Google from syncing any information, uncheck every box in the list. If you need to stop syncing multiple accounts, tap "Google" to back out and pick another account. When you finish, press the "Home" button to close the Settings app.
Stop All Automatic Synchronization
Run the Settings app on your Android and tap "Data Usage."
Open the menu by tapping the "Menu" icon in the corner of the screen -- or pressing the "Menu" button on some devices -- and uncheck "Auto-Sync Data."
Press "OK" on the warning to acknowledge that your Android won't keep any of your accounts synced or display notifications for updates.
Select an account from the Accounts list in the Settings app, open the menu and press "Sync Now" to sync an account manually. With auto-sync off, you need to perform this step for each account separately every time you want to sync.
Turning off sync settings does not delete the Google data already on your device. To do so, pick your Google account from the Accounts list, open the menu and press "Remove Account." Removing your Google account deletes everything associated with that account from your device, including emails and settings, so only remove an account as a last resort or when selling an old device.
You don't need to remove your existing Google account -- or even stop it from syncing -- to add a new Google account. Press "Add Account" in the Accounts section and pick "Google" to add a second account to your device.
The steps in this article apply to the stock Android system developed by Google. Some device manufacturers modify Android, so the steps might differ on your device. Check your manual for directions on modifying accounts and sync settings if these steps do not match your Settings app.