Let's assume one type of Guru that is normal Guru, the one whose have Guru in his Rashi for example the priest who takes care of the temple near you, the one who does regular pooja at your home and can take more money because of his own greed, you can find him on the street having food, etc. the one who can spoil the image of the name Guru. The other example is APJ Kalam, who is at the top of Guru if you talk about the teaching, and Shri Ravishankar if you talk about Saints, who are in exalted Jupiter. 

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