Guess the word

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Across
  1. 3. another word for comortable
  2. 5. it's seetrough, in almost every room and you can open it
  3. 6. you make them on your phone with friends
  4. 7. we do it every night and it's very important
Down
  1. 1. it's in every office
  2. 2. they smell good and are a perfect gift
  3. 3. what makes the sky darker?
  4. 4. it's with a lot of numbers and calculations
  5. 6. It's usally white and you can write on it