Prefix 'uni'

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Across
  1. 2. Groups brought together as ‘one’.
  2. 3. Clothes that look the same and are worn by a specific group.
  3. 5. One piece of garment which covers from the shoulders to the knees or ankles.
  4. 7. A mythical horse with one horn
Down
  1. 1. Doing one action or sound at the same time
  2. 2. Creation turned into ‘one’
  3. 4. Involving one part or side only.
  4. 5. A vehicle with one wheel
  5. 6. One of a kind