Status or Affliction?
Many negative effects that take place during battle are technically considered Afflictions by the game. One example is Burning, which can afflict a unit during battle but goes away afterwards. This distinction is mostly relevant for modders.
For the sake of simplicity all negative effects that are in effect during a battle and disappear after the battle is over will be considered Status Effects on this page.
This page should detail the various positive and negative status effects that can affect units in combat.