material nouns

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Across
  1. 5. a hard,black substance burnt as fuel
  2. 6. a very strong material made from iron,used for making utensils,machinery
  3. 7. strong material that bends easily,produced from the juice of a tree
Down
  1. 1. metal used to make coins and jewellery
  2. 2. the hard material that trees are made of
  3. 3. clear liquid that falls from the sky as rain
  4. 4. a type of cloth which is light and smooth