Inventions

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Across
  1. 2. the synonym of popular
  2. 4. the person that make an object that helps people
  3. 5. the thing from which other things are made
  4. 7. something you really want to know
Down
  1. 1. synonym to think
  2. 2. abbreviation for world wide web
  3. 3. object that is made by human to help them
  4. 6. when you can by something