Marketing refers to activities a company undertakes to promote and deliver products, including advertising, selling, and distribution. It is both an art and a science, involving continuous and regular activities aimed at earning a profit through dynamic processes. Selling, on the other hand, refers specifically to transactions where money is exchanged for goods or services, and focuses on developing relationships through oral conversations and quickly solving customer queries and providing additional information. The key differences between marketing and selling are that marketing involves determining customer wants first and planning for new products and future growth, while selling focuses on moving currently available products and short-term sales volume goals.