Following are some terminology used in Nagarathar lifestyle.
Aiyyah Grandpa (Faternal & Maternal)
Appatha Grandma (Faternal)
Aayyah Grandma (Maternal)
Appachi Father
Aatha Mother
Periappachi Father 's elder brother/ Mother's elder sister's husband
Periatha Father's elder brother's wife/Mother's elder sister
Chithappa Father's younger brother/Mother's younger sister's husband
Chinnatha Father's younger brother's wife/Mother's younger sister
Ammaan Mother's brother/Father in law/Father's sister's husband
Ammaanpendir Mother's brother's wife
Annan

Elder brother

Aachi Elder sister
Thambi Younger brother
Thangachi Younger sister
Annanpendir Elder brother's wife
Aiythan Sister's husband/Mother's brother's son/Father's sister's son/brother in law
Aiythai Father's sister/Mother in law
Aiythiandi Father's sister's daughter/Mother's brother's daughter/Sister in law
Thambipendir Younger brother's wife