Definition
1.Single is someone who is not in a relationship or is "unmarried".
2.De-facto also known as “informal union”. It is a relationship in which a man and a woman live together for some time as a couple, intending to have a lasting relationship but they are not married to each other or do not have a formal civil or religious ceremony.
3.Married is when a man and woman establish their decision <http://dictionary.reference.com/browse/decision> to live as husband and wife by legal commitments, religious ceremonies, etc
4.Separated is not a complete break of the legal union of marriage. It is a half way status that comes with its own set of legal rules, it can either through court proceedings or with an informal agreement between parties.
5.Divorced is the legal termination of a marriage by a court in a legal proceeding, requiring a petition or complaint for divorce (or dissolution in some states) by one party
6.Widowed. A married person whose spouse has died and who has not remarried
9. Not stated