Polygamy is a broad term and when applied to human society refers to plural marriage which means having more than one spouse. Facets of this term include polygyny which refers to a form of plural marriage in which a man is allowed to have more than one wife. Polyandry describes the form of plural marriage in which a women has more than one husband. Polyamory is a form of plural marriage where a family consists of multiple husbands and wives at the same time. These kinds of marriages existed historically in human societies and continue in some societies in the present.