qt5-qtwebengine

My system has both qt5-qtwebengine and qt5-qtwebengine-freeworld (from rpmfusion) installed. This was no problem until about 2 weeks ago, when qt5-qtwebengine-5.11.3-1 was released. As a result, my system is still stuck at qt5-qtwebengine-5.11.2-2. Should I delete qt5-qtwebengine-freeworld-5.11.2-1? Does the official qt5-qtwebengine-5.11.3-1 now obsolete it? And, furthermore, what is qtwebengine used for? Just konqueror? akregator? und?