Punjabi has a separate word for almost every relation, and the words distinguish the father's side from the mother's side throughout.
The father's brother is chacha or taya depending on whether he is younger or older; the mother's brother is mama. The father's sister is bhua; the mother's sister is masi. The father's father is dada; the mother's father is nana. A brother's wife is bharjai; a husband's brother is dewar or jeth by age; a husband's sister is nanaan; a wife's brother is saala.
Every one of those relations carries a different set of obligations, jokes and taboos. A mama's role at a wedding is fixed; a nanaan's relationship with a bride is proverbially difficult; a saala is the licensed target of abuse.
The vocabulary is a map of a joint family and of village exogamy: the mother's village, the nanke, is a different world from the father's village, the dadke, and a Punjabi child spends summers in one and lives in the other.
English collapses all of this into uncle, aunt and cousin, which is why Punjabi families speaking English to their children lose the structure within one generation and then have to explain the wedding.
Punjabi distinguishes the father's brother from the mother's brother, and the father's sister's husband from the mother's sister's husband, and has a separate word for each.
The distinctions matter because the obligations differ. The mother's brother has a specific role at a wedding and the father's brother has a specific claim on the land.
English has uncle for all of them. Translating a Punjabi family sentence into English loses the information that the sentence was carrying.