KINSHIPS ( http://en.wikipedia.org/wiki/Cousin)
In kinship terminology, a cousin is a relative with whom one shares a common ancestor (or ancestors). In modern usage, the term is rarely used when referring to a relative in one's immediate family where there is a more specific term to describe the relationship (e.g. one's parents, siblings and descendants). The term blood relative can be used synonymously, and underlines the existence of a genetic link. A system of "degrees" and "removals" is used to describe the relationship between the two cousins and the ancestor they have in common.