What is referred to when discussing the life expectancy of a product?

When discussing the life expectancy of a product, the term 'durability' is specifically relevant because it refers to the ability of a product to withstand wear, pressure, or damage over time. Durability is a key factor in determining how long a product will remain functional and useful without needing significant repairs or replacements. Products that are designed with durability in mind are typically made from high-quality materials and undergo rigorous testing to ensure they can endure the conditions in which they will be used.

In contrast, aesthetics relate to the visual appeal and design of a product, which does not directly impact its longevity. Functionality concerns how well a product performs its intended purpose, but it does not necessarily address how long it will last. Cost refers to the financial aspects of acquiring a product and may influence purchasing decisions but does not directly correlate with the lifespan of the product itself. Thus, when life expectancy is a focal point of discussion, durability is the most appropriate term to use.