 In these terms, a relation can be distinguished from a “relational property”. Whereas a relation is borne by one thing to another thing (possibly, in certain cases, to the same thing), a relational property is the property of bearing a relation to something. Suppose \(a\) bears a relation \(R\) to \(b\). Then \(a\) has the relational property of bearing \(R\) to \(b\) whilst \(b\) has the property of \(a\)’s bearing \(R\) to it. Here \(R\) is binary whilst the relational properties are unary because they are had by single things, \(a\) and \(b\) respectively. For example, marriage is a relation between two people but being married to Cleopatra is a relational property had by Antony whilst being married to Antony is a relational property had by Cleopatra.