Y making the 'i' sound as in pyramid

123456789101112131415161718
Across
  1. 5. - having a meaning that is mysterious or obscure.
  2. 8. - each of two or more words having the same spelling or pronunciation but different meanings and origins.
  3. 9. - a __________ is a shape that has 2 circles as a base and 1 rectangle.
  4. 11. - A type of exercise
  5. 12. - a part of a song
  6. 13. - a colourless fluid containing white blood cells, which bathes the tissues and drains through the lymphatic system into the bloodstream
  7. 14. - same on both sides
  8. 16. -a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  9. 17. - supplied with oxygen
Down
  1. 1. - we need _______ to live
  2. 2. - a sign that has a meaning
  3. 3. from Greek mythology
  4. 4. - similar meanings to different words
  5. 6. - is when you feel sorry for someone
  6. 7. - Doing what you usually do e.g it is a typical Tuesday morning
  7. 10. -a collection of myths, especially one belonging to a particular religious or cultural tradition
  8. 15. - I went to go see the huge ___________ in Egypt
  9. 18. - Egypt is a country