An element represents a concept. In an instance, it acts as a container that may carry either simple content (a value) or complex content (an object). In either case, an element can also carry attributes.
nc:PersonGivenName. This element will carry simple content, for example, a value like “Jane”.
nc:Person. This element will carry complex content - a set of sub-elements representing properties like name, age, height, and employment information.