Blood Relation

Some Common Terms Of relationship :

Parent - Mother or father
Child - Son or daughter (even if an adult)
Sibling – Brother or sister
Spouse - Husband or wife

Basic Relationships:-

Most English speakers use uncle for any of four relationships: father's brother, mother's brother, father's sister's husband, or mother's sister's husband.

Again, aunt in English could mean father's sister, mother's sister, father's brother'swife, or mother's brother's wife.

Brother's or sister's son is called nephew.

Brother's or sister's daughter is called niece.

Children of aunt or uncle are called cousins.

Generations in Blood Relation:

Generation 1 - Grandfather, grandmother, maternal grandfather, maternal grandmother

Generation 2 - Father, Mother, Uncle, Aunt, Maternal Uncle, Maternal Aunt
Generation 3 - Self, Brother, Sister, Brother-in-law, Sister-in-law
Generation 4 - Son, Daughter, Nephew, Niece