We say the watch has a face, and hands, and a mechanism and a battery, But what we really mean is, we don't think  there is a thing called the watch to which we then attach all these bits.
Kažemo da sat ima lice, kazaljke, mehanizam i bateriju, ali pod tim ne mislimo da imamo nešto što  nazivamo satom na što slažemo sve ove dijelove.