Status effect

Status effects are conditions that affect targets for a certain period of time. The effects are inflicted usually by an ability.

Buff
A Buff is a general term that refers to any positive effect with a duration. Effects that improve one's damage output, prevent damage, or increase movement speed are examples of buffs. The inverse is called a debuff.

Debuff
A Debuff is a general term that refers to any negative effect with a duration and/or an area of effect. Damage over time, reveal and crowd control effects, such as root and stun are all examples of debuffs. The inverse is called a buff.