Personal interest is the term used to describe a person's individual preferences, hobbies, or areas of expertise. It is often considered to be one's passion or something that they truly enjoy doing. There are a variety of synonyms that can be used interchangeably with the term personal interest, such as hobby, pastime, pursuit, passion, inclination, preference, and inclination. Each of these words emphasizes the personal nature of an interest and highlights the fact that it is driven by one's unique personality and interests. Overall, having a personal interest is an important aspect of life, as it helps individuals to feel fulfilled and engaged in their lives.