| Kur | The matrilineal clan, all of whose members descend from one named first ancestress. Marriage within the kur is prohibited absolutely, and the prohibition is the strongest rule in Khasi social life. |
| Ka Iawbei | The first ancestress of a clan — the founding woman from whom descent is counted, and the figure invoked in clan ritual and in the naming practice at Kongthong. |
| Ka khadduh | The youngest daughter, who inherits the ancestral property. It is a custodianship rather than a windfall — she holds the ancestral house, keeps the clan's ritual objects, performs the ceremonies, and is expected to house and care for her parents and any unmarried or returning siblings. Property acquired by an individual is separate and can be disposed of freely; it is the ancestral share that follows this rule. |
| U kni | The mother's brother — the formal male authority in the matrilineal house. He speaks for the clan in the dorbar, is consulted on marriage and property, and has ritual duties in his sister's household rather than in his wife's. A man's institutional role is therefore in the house he was born into, not the one he lives in. |
| Iing | The house, and by extension the household as a unit of descent. The iing seng or ancestral house is the one the khadduh keeps. |
| Hima and Syiem | The hima is the old Khasi state — a confederation of villages; the syiem is its elected chief, chosen from a designated clan and through the female line, and constrained by a council. Around twenty-five himas existed before the colonial period, and several still hold ceremonial authority. |
| Dorbar shnong | The village assembly, headed by a rangbah shnong. It is the working unit of Khasi governance, meets in the open, and settles land use, disputes and village works. |
| Law kyntang / law lyngdoh | Sacred grove. Law is forest; kyntang marks it as consecrated; a law lyngdoh is a grove in the charge of the priestly Lyngdoh clan. Nothing may be taken out — not timber, not fruit, in the strictest groves not even a fallen leaf. |
| Mawbynna | A memorial stone. Maw is stone; the upright menhirs are maw shynrang, understood as male, and the flat table stones laid before them are maw kynthei, understood as female and associated with the maternal line. |
| Jingkieng jri | A bridge of the jri, the rubber fig — the living root bridge. Jingkieng is bridge; the name specifies the species rather than the shape. |
| Kwai | Areca nut, taken with betel leaf and slaked lime. It is offered to every visitor before conversation begins, shared at every gathering, and placed with the dead. Declining it is possible but noticed. |
| Knup | The full-body rain shield of bamboo and plastic sheeting or leaf, shaped like a boat and worn over the back so that both hands stay free. In this rainfall an umbrella is useless and a knup is not. |
| Nei iong | Black sesame — the seed whose roasted paste gives Khasi pork gravies their colour and their aroma. |
| Niam Khasi and Niamtre | The indigenous religion of the Khasi and of the Pnar respectively, organised in the modern period through bodies such as the Seng Khasi. Around a sixth of the population follows it; most of the rest are Christian, and the two calendars run alongside each other without much friction. |