Guess The Word

12345678
Across
  1. 3. not being easy to achieve
  2. 7. to have a lack of something
  3. 8. the advantage of something
Down
  1. 1. to get something from someone is to _____
  2. 2. the goal or reason for doing something
  3. 4. the upper part of legs
  4. 5. acting or doing something the same way over time
  5. 6. an academic subject about force, gravity,