The UCC, Article $2,$ separates contracts for buying goods from contracts for purchasing services to make things clearer legally. When a contract involves both goods $($like tiles$)$ and services $($like installation$),$ it depends on what's more important in the deal. For instance, if you hire someone to retile your bathroom, the main focus is probably on the service of installing the tiles, not just buying the tiles themselves. So$,$ even though you're getting both tiles and installation, it's seen more as a service contract than a goods contract. This separation helps courts apply the right rules and ensures fairness in different types of deals.