2, if not as a composition, it should be "impure inaction."
3. According to the criminal law, crime can only be realized in the form of omission, which is called pure omission crime or real omission crime.
For example, the crime of abandonment and some crimes of dereliction of duty stipulated in China's criminal law belong to this category. The crime of fraud generally consists of behavior, with omission as an exception, so it is not a real crime of omission.