Well, it has been ambiguous term for a while (esp. when it was 'literally' translated into Korean) eventhough i heard it years ago. There's no 1-to-1 translation of lead generation into Korean.
Lead generation (commonly abbreviated as lead-gen) is a marketing term that refers to the creation or generation of prospective consumer interest or inquiry into a business' products or services. Often lead generation is associated with marketing activity targeted at generating sales opportunities for a company's sales force. Therefore a lead is correctly described as information regarding or provided by a consumer that may be interested in making a purchase. Whereas, generation is one of a myriad of activities that may produce that information and perceived interest.
