Defect Taxonomies

Categories of Defects

All software defects can be broadly categorized into the below mentioned types:
• Errors of commission: something wrong is done
• Errors of omission: something left out by accident
• Errors of clarity and ambiguity: different interpretations
• Errors of speed and capacity

However, the above is a broad categorization; below is a list of varied types of defects that can be identified in different software applications:
- Conceptual bugs / Design bugs
- Coding bugs
- Integration bugs
- User Interface Errors
- Functionality
- Communication
- Command Structure
- Missing Commands
- Performance
- Output
- Error Handling Errors
- Boundary-Related Errors
- Calculation Errors
- Initial and Later States
- Control Flow Errors
- Errors in Handling Data
- Race Conditions Errors
- Load Conditions Errors
- Hardware Errors
- Source and Version Control Errors
- Documentation Errors
- Testing Errors