Knowledge refers to the fact of knowing about something; general understanding or familiarity with a subject, place, situation etc. It commonly describes awareness of a particular fact or situation; a state of having been informed or made aware of something, intellectual understanding; the state of appreciating truth or information, and familiarity or understanding of a particular skill, branch of learning etc, which gives the term a broader and more practical sense than a single short definition would suggest. Depending on context, it can also point to sexual intimacy or intercourse (now usually in phrase carnal knowledge), information or intelligence about something; notice, and the total of what is known; all information and products of learning, so the category can cover literal uses, related ideas, and more figurative extensions of the same core meaning. Taken together, these meanings present Knowledge as a flexible theme rather than a narrowly technical label, covering the central idea people usually mean when they use the word while still leaving room for closely related senses that appear in real language. Additional shades of meaning include something that can be known; a branch of learning; a piece of information; a science, acknowledgement, notice, awareness, the deep familiarity with certain routes and places of interest required by taxicab drivers working in London, England, and to confess as true; to acknowledge, which reinforce how the category can stretch across adjacent but still recognizable uses of the same term.
