The roles of the cast are not fixed and often vary.

The dance therapist's role typically varies with the needs of patients.

The causal role of different socioeconomic factors may vary by country.

The work and role of a constable can vary a lot in different countries.

The role of interest groups in formulating foreign policy varied with the issue at hand.

The role that the faith plays in the lives of individuals varies considerably, however.

Until that time, the role and duties of the office had varied.

The participants' roles once a jury has taken place vary from nothing to being asked to help bring about the recommendations they have made.

The role and importance of this official varied over time.

The social roles of women in Ghana have varied throughout history.