Burn-in refers to the process of testing a newly manufactured electronic device in order to detect and isolate any defects or issues before it is released for sale. However, there are several other terms that can be used synonymously with burn-in. These include: stress test, soak test, power-on test, life cycle test, reliability test, and quality assurance test. All of these tests are designed to ensure that electronic devices are reliable and free from defects, and are necessary for ensuring that products meet the highest standards of quality and performance. By undergoing these tests, manufacturers can assure that their products will perform as expected over the long-term, and that customers will be satisfied with their purchases.