A long time ago, we had a quality specialist in to give a talk. His message went like this:
Software engineers are engineers who design and implement software. They need to think like engineers. When software doesn't work as intended it doesn't have "bugs." Bugs are cute, bugs are quirky, even funny. When software doesn't work as intended, it has defects, just like any other engineered solution. Think of it this way: if the anti-lock brakes on your car fail, it's not a bug, it's a defect. It doesn't matter if the root cause is hardware or software. People die either way.
Dramatically worded, but a great message nonetheless.