Sales involve identifying potential customers, understanding their needs, and offering solutions to persuade them to buy. Key steps include prospecting, approaching, presenting, handling objections, closing, and follow-ups. The goal is to build trust and drive business growth. A freelancer works independently, offering services on a contract basis, while an employer (client) hires them for specific tasks. The process involves agreement on work terms, task completion, and payment upon delivery. Freelancing offers flexibility but requires self-discipline and strong communication.