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Knowledge refers to the information, understanding, and skills acquired through education or experience. It describes the state of knowing about a particular subject or having a general awareness of facts and principles.

A feeling of uncertainty or a point that is open to question. It refers to a doubt or a query one has about something.

To grasp the meaning, nature, or logic of something through intellectual effort. It can also refer to having empathy or showing tolerance towards someone's circumstances or feelings.