A Body of Knowledge (or BoK) is like a collection of facts and information related to a particular field or subject. It means that all the knowledge that has been gathered and learned from people who have studied or worked in a certain area is collected together in one place. For example, a doctor has a BoK about medicine that contains all the knowledge he has about diseases, treatments, and how the human body works. Or a teacher might have a BoK about mathematics that explains all the different topics and formulas used in math. A Body of Knowledge is a great way for people to learn about a certain subject, and keep up to date with new discoveries and information.