A Connector specifies links that enable communication between two or more instances. This is in contrast to Associations, which specify that any instance of associated Classifiers can have a connection.
The Connector to ConnectableElement relationship is used to form the Connector relationship – for instructions on how to do this, see Connector. The Connector to ConnectableElement relationship line is defined by ConnectorEnd.
Relates
The Connector to ConnectableElement relationship can be drawn like this: