What is the difference between implicit wait and explicit wait?

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Implicit wait applies globally to element lookup; explicit wait targets a specific condition at a specific point. Implicit waits alter WebDriver's element lookup polling for the session. Explicit waits poll a named condition until it succeeds or times out. Explicit waits are clearer, more targeted, and better suited to dynamic applications. Mixing the two can create unpredictable timeout behavior.

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What is the difference between implicit wait and explicit wait?