Re: @David 142
Yes. Beneficence and maleficence denote performing acts of good or evil, respectively; benevolence and malevolence to attitudes. Malfeasance also denotes an act or acts, but not necessarily evil per se so much as wrongdoing; that is, malfeasance connotes a failure of official or professional responsibility, which may or may not represent a serious moral lapse, while maleficence connotes specifically some evil act which may not be related to office or profession.
Kicking a puppy is maleficence, but it's not malfeasance unless you're in the dog-management business.
A police officer who destroys evidence because he believes the perpetrator was justified is committing malfeasance, but depending on the circumstances it might be argued the act is not a moral violation.