What are the names of piano octaves?

Names of Piano Octaves (from low to high):

1. *Subcontra octave* (C0 to B0)

2. *Contra octave* (C1 to B1)

3. *Great octave* (C2 to B2)

4. *Small octave* (C3 to B3)

5. *One-lined octave* (C4 to B4)

6. *Two-lined octave* (C5 to B5)

7. *Three-lined octave* (C6 to B6)

8. *Four-lined octave* (C7 to B7)

9. *Five-lined octave* (C8 to B8)