Guru

A "guru" is someone who knows a lot about something and is very good at teaching others about it. They are like a teacher, but often a teacher who has spent many years learning and practicing their craft. They can be a spiritual teacher, a yoga teacher, or even someone who is really good at cooking. Whatever their specialty is, people look up to them as an expert and go to them for advice and guidance. It's kind of like having a superhero for teachers!