The absolute amount risk of harm to an individual resulting from use of a nicotine product at a specified amount for a specified duration in a specified way. It can be quantified in many different ways from using numeric or textual labels. No risk is represented by '0', 'Zero harm' or 'No harm'.
Differentiated from absolute harm in that it combines amount of harm with probability of harm. Thus a high risk of harm involves both high probability of harm and high amount of harm. A low risk of harm could involve a low probability of a high amount of harm. This term should probably not be used without quantifying the degree of risk and the amount of harm in objective terms.