Outline of knowledge
The following outline is provided as an overview of and topical guide to knowledge:
Knowledge – familiarity with someone or something, which can include facts, information, descriptions,  and/or skills acquired through experience or education. It can refer to the theoretical or practical understanding of a subject. It can be implicit (as with practical skill or expertise) or explicit (as with the theoretical understanding of a subject); and it can be more or less formal or systematic.