1 to change

2 to alter

3 to transform

4 to correct

1 to change into

1 to change

2 to alter

3 to transform

1 to amend

2 to alter

3 to modify

1 to change one's name

1 complete change from the old rut (idiom); dramatic change of direction

2 a volte-face

3 to change old practices

1 to change one's plan all of a sudden (idiom)

1 change of string, move out of rut (idiom); dramatic change of direction

2 to dance to a different tune

1 to reform and start afresh (idiom); to turn over a new leaf

1 to mend one's ways (idiom)

2 to turn over a new leaf