A product line refers to a series of related products offered by a company. Companies often use product line synonyms interchangeably to refer to their products. These include product range, product family, product assortment, and product series, which all encompass a variety of related products offered by a company. Another synonym for product line is a brand line, which emphasizes the branding aspect of marketing products. Different companies may prefer to use different synonyms for their product lines based on their branding, marketing strategies and target audience. Regardless of the term used, a product line is a vital aspect of any company's marketing and sales strategy.