Masculine and Feminine nouns

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Across
  1. 2. your brother's son
  2. 5. from duck family
  3. 7. male of a cow
  4. 8. works in plays
Down
  1. 1. your father's brother
  2. 3. married to a woman
  3. 4. has same parents as you
  4. 6. Rules a country