defect

As a noun, this word carries a clinical or technical weight. It suggests a failure in manufacturing or a biological flaw, implying that the object is broken or substandard compared to a perfect blueprint. It is common in quality control and medical diagnostics. As a verb, the word evokes a sense of betrayal or a high-stakes political shift. It is rarely used for simple job changes; instead, it implies a dramatic crossing of lines, often involving ideological conflict or the seeking of asylum in a hostile territory.