noun

A group of buildings: A set of connected buildings used for a particular purpose, such as a residential complex or an industrial complex.

adjective

As an adjective, "complex" means something that is composed of many interconnected parts or elements, making it complicated or difficult to understand.

Example

noun

1. The apartment complex includes a gym and a swimming pool.
2. He has a superiority complex that makes him act arrogantly.
3. The protein complex is essential for the cell's function.

adjective

1. The math problem was too complex for most students to solve.
2. She wore a dress with a complex pattern of colors and shapes.
3. The machinery has a complex design that requires specialized knowledge to operate.