Board Thread:Questions and Answers/@comment-32975343-20170828171820

I am really confused how this whole Grail System works since English is not my mother tongue and im having a hard time understanding all the Things about the Grail. What actually is the difference of the Lesser Grail and the Holy Grail and why can it also grant wishes? I always thought the Holy Grail is used to activate the Greater Grail and have any wish granted. Can someone please explain simply how it works and how the root is connected to it? Thanks in advance! 