Marketing refers to activities like advertising, selling, and delivery that promote a company's products. Key marketing activities discussed in the document include advertising to draw attention, monitoring quality over time, packaging to contain, protect, and promote products, and record keeping of business transactions. The document emphasizes that packaging is important for promoting household linens and should be more than plain wrapping, as attractive packaging can be a selling point that attracts customers. Several types of packaging for household linens are described, including semi-open boxes that allow viewing and comparing different items, see-through packaging that shows the product while protecting it, simple rolled packaging using recycled paper, basic taped packaging for wholesale, and minimal ribbon packaging with labels.