Answer:
mores; taboo
Explanation:
Mores can be defined as norms, morals, or values that are considered to be right and wrong by the society. The term 'mores' was introduced by William Graham Sumner. They are considered as the highly valued norms in a society that is needed to be followed to keep the peace and well being in a society. A violation of more can be punishable.
Taboo, on the other hand, can be defined as a strong negative norm that is prohibited in a society or culture. These social actions are prohibited either based on religious beliefs or considered dangerous to the human race. Violation of taboo can result in extreme disgust or even the expulsion from the society.
In the given case, Jeffrey has been convicted for the violation of two social norms. First, murder which is a more, as murder is an action that is socially considered as wrong. Second, cannibal which is taboo. Cannibal is an act of eating the flesh of one's own race. And this action is prohibited in any society.
So, the correct answers are mores and taboo.