Watch a SNEAK PEEK of the shocking new documentary series, Secrets of Polygamy, premiering Monday, January 8th at 10/9c. | A&E

Polygamy and polyandry both involve having multiple spouses, but they differ in gender. Polygamy is the general term for having multiple spouses, while polyandry specifically refers to a woman having multiple husbands. Polygyny, another form of polygamy, involves a man having multiple wives. Polygamy: A general term for having more than one spouse. Can refer to both polygyny (one man, multiple wives) and polyandry (one woman, multiple husbands). Often used as a synonym for polygyny. Polyandry: A