Ambilineal is a term used to describe the inheritance of property or descent through both the maternal and paternal line. There are several synonyms that can be used to describe the same concept, such as bilineal, double descent, and ambipaternal. Bilineal is a combination of the words "bi" and "lineal," meaning two lines of descent, while double descent refers to the idea that individuals can become members of more than one kinship group through both the maternal and paternal line. Ambipaternal is similar to ambilineal, but specifically refers to the inheritance of property through the father's and mother's line. Overall, these terms all describe the same concept with slight variations in emphasis.