Which word do you seek?

1. The fact of knowing about something; general understanding or familiarity with a subject, place, situation etc.
His knowledge of Iceland was limited to what he'd seen on the Travel Channel.

2. Awareness of a particular fact or situation; a state of having been informed or made aware of something.

3. Intellectual understanding; the state of appreciating truth or information.
Knowledge consists in recognizing the difference between good and bad decisions.

4. Familiarity or understanding of a particular skill, branch of learning etc.
A secretary should have a good knowledge of shorthand.

5. (philosophical) Justified true belief

6. Sexual intimacy or intercourse (now usually in phrase carnal knowledge).

7. Information or intelligence about something; notice.

8. The total of what is known; all information and products of learning.
His library contained the accumulated knowledge of the Greeks and Romans.

9. Something that can be known; a branch of learning; a piece of information; a science.

10. Acknowledgement.

11. Notice, awareness.

12. The deep familiarity with certain routes and places of interest required by taxicab drivers working in London, England.

1. To confess as true; to acknowledge.