Words and Whispers

Across

2. Add new features to old equipment

4. Short sermon or moral lecture

6. Irish spirit known for wailing

8. Dental care tool for cleaning teeth

10. Short phrase expressing a guiding principle

12. Connection or relationship between elements

13. Possible sequence of events in a story

Down

1. Public display of artworks or items

3. Absurd or comical theatrical play

5. Extract nutrients by washing through soil

7. Light translucent fabric used in theater

9. Summary or sketch of main points

11. Elaborately decorated or detailed style