| A | B | 
|---|
| grandparents | your parents' parents | 
| grandmother | your mum's or dad's mother | 
| grandfather | your mum's or dad's father | 
| father | your dad | 
| mother | your mum | 
| uncle | your mum's or dad's brother | 
| aunt | your mum's or dad's sister | 
| father-in-law | your husband's or wife's father | 
| mother-in-law | your husband's or wife's mother | 
| brother-in-law | your husband's or wife's brother | 
| sister-in-law | your husband's or wife's sister | 
| wife | the woman you are married to | 
| husband | the man you are married to | 
| nephew | your aunt's or uncle's son | 
| niece | your aunt's or uncle's daughter | 
| son | boy you gave birth to | 
| daughter | girl you gave birth to | 
| grandson | boy your child gave birth to | 
| granddaughter | girl your child gave birth to | 
| cousins | your aunt's or uncle's children | 
| step-sister | daughter of your mum's husband, who is not your dad | 
| step-brother | son of your mum's husband, who is not your dad | 
| step-mother | your dad's wife, who is not your mum | 
| step-father | your mum's husband, who is not your dad | 
| halfsister | sister who has either the same dad or mum | 
| halfbrother | brother who has either the same mum or dad |