Unscramble Errations

What is the meaning of word errations unscrambled?

What 9 letter words can be made from letters E R R A T I O N S:

1. serration - Definition of serration

Make more words by adding or removing letters

How many 8 letter words can you make from letters E R R A T I O N S?

1. anterior - Definition of anterior

2. antrorse - Definition of antrorse

3. asterion - Definition of asterion

4. introrse - Definition of introrse

5. notaries - Definition of notaries

6. notarise - Definition of notarise

7. restrain - Definition of restrain

8. retrains - Definition of retrains

9. rotaries - Definition of rotaries

10. senorita - Definition of senorita

11. Storeria - Definition of Storeria

12. strainer - Definition of strainer

13. terrains - Definition of terrains

14. trainers - Definition of trainers

Which 8 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter E and unscrambling rrations
2) Removing the letter R and unscrambling erations
3) Removing the letter R and unscrambling erations
4) Removing the letter A and unscrambling errtions
5) Removing the letter T and unscrambling erraions
6) Removing the letter I and unscrambling erratons
7) Removing the letter O and unscrambling erratins
8) Removing the letter N and unscrambling erratios
9) Removing the letter S and unscrambling erration

More anagrams containing the letters E R R A T I O N S
erratiosn erratisno irrtaneso trerisoan