0 to divide into two or more parts (by force) -- brechen
I accidentally broke the vase.
1 (usually with off/away) to separate (a part) from the whole (by force) -- abbrechen
2 to make or become unusable -- vernichten
Someone’s broken the photocopier.
3 to go against, or not act according to (the law etc) -- brechen
4 to do better than (a sporting etc record) -- (einen Rekord etc.) brechen
5 to interrupt -- abbrechen