Program errors occur when there is an issue with the code or programming language used in a software application. These errors can cause a range of problems, from slowing down the system to rendering the program completely unusable. However, there are several synonyms for the term 'program error,' which can help us describe the problem more effectively. Common synonyms include bugs, glitches, faults, defects, anomalies, and hitches. All these words convey the same meaning as program error, but with slight variations in their connotations. It is essential to identify and resolve program errors immediately to maintain the overall efficiency and functionality of the system.