Creativity is the capacity to innovate: in the ways we express ourselves, interact with our environment, develop products or solve problems. While often associated with art and literature, this trait is important in all fields of human endeavor, including scientific research; indeed, inventors are among the most creative members of our species.
While most humans have some capacity for creativity, there is wide variability among the population. Having exceptional talent in a given area does not necessarily correlate with creativity; a world class musician, for example, may not be creative while the individuals who compose his music or conduct his performance are likely to be exceptionally creative. And, in my experience, creative people have a drive to express this trait in many aspects of their life; it is not unusual to find someone who is both a composer and a painter, both a designer and a photographer, both a chef and a choreographer.
Though a certain level of intelligence is imperative, one's creativity does not necessarily correlate with his or her IQ; a genius may not be creative while very creative people may be of average intelligence. In fact, there is evidence that creativity is not limited to the human species; some chimpanzees, for example, use natural tools, presumably having learned this behavior from creative members of their clan.