Defect (noun)

1. A flaw or imperfection in a physical object.
2. A drawback or shortcoming in a plan or system.
3. A departure from an accepted norm or standard.

Origin:

Late middle english: from latin defectus, from deficere "to fail".

Examples:

1. A large defect in the building's structure was revealed after the earthquake.
2. One of the major defects in the proposal was its unrealistic time frame.
3. She noticed a small defect in the fabric of her new dress.
4. His political views are considered a defect by some members of the community.
5. The factory's products are often rejected because of defects in quality.