Attribute

From semanticweb.org

(This is old terminology. SMW 1.0 unifies attributes and relations into the single Property. However, the term "attribute" is still common in semantics.)

An attribute defines a characteristic of an object, such as weight, size, or color. In Semantic MediaWiki an attribute is a Property that you assign to the article about the object that it describes. You can specify a Type for the property to indicate the kind of values for the property. See Help:Annotation.