Puzzle-time 14

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Across
  1. 4. Fat thing you can write with.
  2. 6. A ship that travels under the sea.
  3. 7. A PC needs a keyboard and a -----.
Down
  1. 1. Big Korean supermarket.
  2. 2. Popular candy on a stick.
  3. 3. Your smartphone won't work without one.
  4. 5. Look through it and see what's outside.
  5. 6. It carries its house on its back.