Across
- 2. the person who leads or commands a group, organization, or country
- 6. a person who takes part in any event
- 7. a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact
Down
- 1. one of a regulation or principle
- 3. the practice of training people to obey rules or a code of behaviour, using punishment to correct disobedience
- 4. move one's hand to and fro in greeting or as a signal
- 5. a group of players forming one side in a competitive game or sport