The terms gokenin and kenin are etymologically related but have very different meanings. Confusion can arise also because in documents sometimes this last word is used together with the honorific prefix (go + kenin). Under the ritsuryō legal system in use in Japan from the seventh to the tenth century, a kenin ("house person") was a human being who, while legally property of a family, could be inherited but not sold and, unlike a slave, had some rights. For example, the inventory of a temple's wealth mentions thirteen kenin, among them four women, who were in effect servants.