die Überarbeitung
revision
The process of checking and improving a text, plan, or workpiece; revision.
Nach der Überarbeitung durch den Lektor war der Roman deutlich besser.
After the revision by the editor, the novel was much better.

revision / overwork
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revision
The process of checking and improving a text, plan, or workpiece; revision.
Nach der Überarbeitung durch den Lektor war der Roman deutlich besser.
After the revision by the editor, the novel was much better.

The noun 'die Überarbeitung' is derived from the verb 'überarbeiten' (to revise / to overwork). This verb has two meanings, which are reflected in the noun: to improve something (einen Text überarbeiten — to revise a text) or to work too much.
Er muss den Bericht bis morgen überarbeiten.
He has to revise the report by tomorrow.
You can recognize the meaning from the context. If it is about texts, plans, or art, 'Revision' (revision) is meant. If it is about health, stress, and work, 'Erschöpfung' (exhaustion) is meant.
Die erste Version des Drehbuchs braucht noch eine Überarbeitung.
The first version of the screenplay still needs revision.
In the meaning 'Revision' (revision), the word is often combined with verbs such as 'benötigen' (to need) or 'erfordern' (to require). Typical adjectives are 'gründlich' (thorough), 'redaktionell' (editorial), or 'umfassend' (comprehensive).
Dein Aufsatz benötigt eine gründliche Überarbeitung der Argumentation.
Your essay needs a thorough revision of the argumentation.
In the meaning 'Erschöpfung' (exhaustion), the word often appears with prepositions such as 'wegen' (because of) or 'infolge von' (as a result of). A typical combination is also 'an Überarbeitung leiden' (to suffer from overwork).
Wegen ständiger Überarbeitung musste er eine Pause einlegen.
Because of constant overwork, he had to take a break.
change
'Änderung' and 'Überarbeitung' can both occur with texts, plans, or pieces of work. 'Änderung' often means a single point or a concrete decision to make something different. 'Überarbeitung' is more about the whole process: you check something again and improve it. That is why an 'Überarbeitung' can contain several 'Änderungen'. The words can be confused because both can lead to a better result. If only one detail is being changed, 'Änderung' fits better; if you are working through the whole thing again, 'Überarbeitung' fits better.

Die Überarbeitung des Berichts ist heute fast fertig.
The revision of the report is almost finished today.
Bei der Bewerbung wird sie noch eine Änderung an der Adresse machen.
In the application, she will still make one change to the address.