customer
A party with whom a user maintains a selling relationship. This party
can be an organization or a person. Various business objects can refer
to a customer. In Siebel CRM, a customer attribute in the context of
a business object can be a person or an organization that includes the
party usage type of Customer. In Outlook, a customer attribute
in the context of a business object can be an organization or a contact
that is flagged as a consumer.