What Am I?

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Across
  1. 2. - A word for something many people know about
  2. 4. - How you would describe a comedian
  3. 6. - A word meaning of today
  4. 7. - Something passed down through the years
Down
  1. 1. - What is Wonder Woman?
  2. 3. - Funny Cat videos are considered?
  3. 5. - A method, plan, or trick is called?