Natural Intelligence is intelligence displayed by humans and animals.
Artificial Intelligence (AI) is intelligence displayed by machines.
Intelligence has been defined in many ways: the capacity for logic, understanding, self-awareness, learning, emotional knowledge, reasoning, planning, creativity, critical thinking, and problem-solving.
More generally, it can be described as the ability to perceive or infer information, and to retain it as knowledge to be applied towards adaptive behaviors within an environment or context.
Intelligence in machines is called Artificial Intelligence, which is commonly implemented in computer systems using programs and, sometimes, specialized hardware.