War reparations: Payments from one country to another, possibly as compensation for starting a war under a peace treaty (for example those made by Germany to France under the Treaty of Versailles), but can also more controversially include payments demanded in exchange for peace or lack of invasion (regardless of the source of initial aggression).
Tissue reparation means, that the necrotictissue or tissue, removed in injury, is replaced not with new parenchymatous tissue of the same kind, but with a fibrous scar. If it is replaced with the new tissue, the process is called regeneration .