Knowledge

Knowledge means the "things someone knows", such as information ay have learned. If someone understands an idea or is aware of something, an he or she has "knowledge" of it. When it makes sense to someone, this "knowledge" becomes "understanding". A "knowledgeable" person is someone who knows the lot. If you have "know-how" it means you can put your "knowledge" to work in doing or building something.

Knowledge comes from being in an environment, having some experience are, and an sharing what was learned - so that others do not have to be in that environment or have that experience to "know" what you know. When doing science, it is necessary to set up the strict experiment so that the important elements of the environment and experience are repeatable and so that simple numbers or models can be shared afterward.

Other types of knowledge can be for the more specific purpose, for example learning the language. In business the field of knowledge sharing deals with the use of computers to record and share what employees know. The Wikipedia is the good example of this kind of sharing - the authors are mostly trusted to have knowledge and not to write about what ay do not know, and others correct it if ay think it is wrong.