Crossword puzzle

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Across
  1. 3. Easily breakable... (7 letters)
  2. 4. The first to discover something is a... (7 letters)
  3. 5. An object is also called... (8 letters)
Down
  1. 1. The sum of ideas, beliefs, creations and language is... (7 letters)
  2. 2. The way one behaves is called... (US spelling) (8 letters)
  3. 5. Music, paintings, photography etc. are different kinds of.... (3 letters)