An emblem is a symbol or an insignia that represents something, such as a group, organization, country, or idea. It can be in the form of a picture, design, or object and is often used to convey a message or express identity. Emblems have been used throughout history for various purposes including heraldry, where they are used to identify individuals or families, and in religious artwork as symbols of faith. The word "emblem" can also refer to an illustration that represents a concept or idea, often accompanied by a caption that explains its meaning.