reform(ation)

reform统指“改革”，a reform是“一项改革”, reforms是“多项改革”。reformation着重在“改革的行为”或“被改革的状态”，比reform范围广些。例如：

• The article deals with language reform.
• This is an important political reform.
• These economic reforms are of great importance.
• The author advocates the reformation of manners.