sub- super-

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Across
  1. 2. a store where customers can buy a variety of foods and usually household items
  2. 3. the layer of soil that is under the top layer
  3. 6. an extremely powerful nation
  4. 7. below what is considered standard, normal, or acceptable
  5. 8. a man who is very strong, successful
  6. 9. an additional headline or title that comes immediately after the main headline or title
Down
  1. 1. a legal agreement by which someone who is renting an apartment, house, etc., is allowed to rent it to someone else for a period of time
  2. 3. an extremely famous and successful performer, athlete
  3. 4. unable to be explained by science or the laws of nature
  4. 5. existing in the part of the mind that a person is not aware of
  5. 7. a system of underground trains in a city