利害

pros and cons / advantages and disadvantages / gains and losses

terrible / formidable / serious / devastating / tough / capable / sharp / severe / fierce

sharp / favorable / advantage / benefit / profit / interest / to do good to / to benefit

to do harm to / to cause trouble to / harm / evil / calamity

see 不知好歹[bu4 zhi1 hao3 dai3]

to be of vital interest

conflict of interest

stake / vital interest / concern

stakeholder / interested party / interested person

interested party