Kin Groups and Descent. Brahmans and Chhetris are members of two kinds of clans, the thar (indicated as a surname) and the gotra; the former is exogamous if a relation can be traced, but the latter is strictly exogamous. Descent and inheritance follow the male line exclusively.
Kinship Terminology. All first cousins are addressed by sibling terms. Siblings are designated as either older or younger brothers or sisters: there is no generic term for brother or sister. Unrelated persons, including strangers, are also often addressed by kinship terms.