 the brothers of one's parents and the husbands of the sisters of one's parents, respectively), whereas others have only one word to refer to both a father and his brothers.Kinship terminologies include the terms of address used in different languages or communities for different relatives and the terms of reference used to identify the relationship of these relatives to ego or to each other.Anthropologist Lewis Henry Morgan (1818–1881) performed the first survey of kinship terminologies in use around the world.