A lady-in-waiting or court lady is a female personal assistant at a court, attending on a royal woman or a high-ranking noblewoman. Historically, in Europe, a lady-in-waiting was often a noblewoman but of lower rank than the woman to whom she attended. Although she may either have received a retainer or may not have received compensation for the service she rendered, a lady-in-waiting was considered more of a secretary, courtier, or companion to her mistress than a servant.

A domestic worker is a person who works within a residence and performs a variety of household services for an individual, from providing cleaning and household maintenance, or cooking, laundry and ironing, or care for children and elderly dependents, and other household errands. The term "'domestic service" applies to the equivalent occupational category. In traditional English contexts, such a person was said to be "in service".