Narcissism is the pursuit of gratification from vanity or egotistic admiration of one's own attributes. The term originated from Greek mythology, where the young Narcissus fell in love with his own image reflected in a pool of water.
In general, synergy (pronounced SIN-ur-jee, from Greek sunergia, meaning cooperation, and also sunergos, meaning working together) is the combined working together of two or more parts of a system so that the combined effect is greater than the sum of the efforts of the parts.
synergy. An increase in the value of assets as a result of their combination. Expected synergy is the justification behind most business mergers. For example, General Motors purchased Electronic Data Systems in 1984 with the expectation that considerable synergy would result.