breakdown

noun

1. the act of disrupting an established order so it fails to continue"the social dislocations resulting from government policies"
2. a mental or physical breakdown
3. (biology) the process of decay caused by bacterial or fungal action
4. a cessation of normal operation"there was a power breakdown"
5. an analysis into mutually exclusive categories
6. (chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance