Reform

Reform refers to the improvement or amendment of what is wrong, corrupt, unsatisfactory, etc. The modern usage of the word emerged in the late 18th century and is believed to have originated from Christopher Wyvill's Association movement, which identified “Parliamentary Reform” as its primary aim. Reform is generally considered antithetical to revolution.

Developing countries may implement a range of reforms to improve living standards, often with support from international financial institutions and aid agencies. This can involve reforms to macroeconomic policy, the civil service, and public financial management.

In the United States, rotation in office or term limits would, in contrast, be more revolutionary, by altering basic political connections between incumbents and constituents. Reform capacity might be limited by the political system or state capacity.

Re-form
When used to describe something which is physically formed again, such as re-casting (moulding) or a band that gets back together, the proper term is re-form (with a hyphen), not "reform".