Wages is often in the plural even though there are many expressions in which the singular is used, such as a living wage, a minimum wage. Wages are paid by the hour, by the day or by the week, usually to blue-collar workers, in other words, to manual labourers. A salary is paid periodically, for example once a month, to white-collar workers such as civil servants, for instance.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.