A more thorough explanation:

A defect is a problem or mistake that can be found in a product, property, process, or legal document. There are three types of defects:

• Design defect: A flaw in the product itself.
• Manufacturing defect: A mistake made during the production process.
• Marketing defect: Inadequate warnings or instructions about how to use the product.

For example, a design defect in a car might be a faulty airbag that doesn't work properly. A manufacturing defect could be a missing bolt in a piece of furniture that makes it unstable. A marketing defect could be a medication that doesn't have clear instructions on how to take it safely.

In real estate, a latent defect is a problem that isn't visible during a normal inspection but is present when the property is accepted. For example, a house might have a hidden leak in the roof that isn't noticeable until it starts raining.

A legal document can also have a defect if it doesn't follow the correct procedures or rules. For example, a will might not be valid if it wasn't signed in front of witnesses.

Overall, a defect is something that can cause problems or make something not work as it should.