Familiarity or understanding of a particular skill, branch of learning etc.
Sexual intimacy or intercourse (now usually in phrase carnal knowledge).
Intellectual understanding; the state of appreciating truth or information.
The fact of knowing about something; general understanding or familiarity with a subject, place, situation etc.
Justified true belief
The total of what is known; all information and products of learning.
The deep familiarity with certain routes and places of interest required by taxicab drivers working in London, England.
Awareness of a particular fact or situation; a state of having been informed or made aware of something.
Something that can be known; a branch of learning; a piece of information; a science.
The use of professionals rather than amateurs in any sport etc.
The status, methods, character or standards expected of a professional or of a professional organization, such as reliability, discretion, evenhandedness, and fair play.