Services are things that people do for you, or you do for other people. They are things you can't touch, like education or healthcare. When you go to the clinic or the hospital, a doctor or a medic examines you and does tests. This is a service. When you go to class, a teacher is giving you a service: teaching a lesson. When you buy a cup of tea in a teashop, you are not only buying tea, water and milk (goods). You are paying for the services of sitting in the teashop, of someone making the tea, bringing it to you and cleaning your cup when you finish.