Nouns, Verbs, Adjectives - A Crossword Conundrum

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Across
  1. 4. A popular sport played with a round ball
  2. 6. To ascend often using hands and feet for support
Down
  1. 1. To travel in search of something new
  2. 2. Highly enjoyable to taste
  3. 3. Of immense size
  4. 5. Tower: a landmark in Paris with tower as the second word