Your brothers child is either a nephew or a niece to you.
Your niece or nephew
In English, the wife of your brother (elder or younger) is your sister-in-law. If you have a child, she is your child's aunt.
Your brother's children would be your nieces and nephews. Your nephew's children would be great-nieces and great-nephews.
The baby of your brother is called your nephew if it's a boy and your niece if it's a girl. These terms denote the relationship between you and your brother's child.
Your cousin's brother is also your cousin. His child is your cousin once removed. For example, if your first cousin has a child, that child is your first cousin, once removed. If your third cousin has a child, the child is your third cousin, once removed.
The five relationships of filial piety in Confucianism are: between ruler and subject, husband and wife, parent and child, older sibling and younger sibling, and friend and friend. These relationships are based on a hierarchical structure where individuals have specific duties and responsibilities towards each other. The concept emphasizes respect, obedience, and duty within these relationships.
Nonexistent, since my father doesn't HAVE a brother.However, hypothetically speaking, my father's brother's child would be my first cousin.
Your brother's sister is your sister. Child,kid,kiddo,by name,munchkin,jelly,little sister,annoying brat,sis and others
You still call your brother, your brother.
If the parent is busy with something else the child can call a friend or relatives to come and pick them up. the child can also call and older sister or brother, older cousin's, uncles or aunt, grandparent's, or friends that are older then then.
Your mom's brother to your child is a great uncle. That is because your mom's brother is YOUR uncle, so he to your child will be a great uncle!
Biological child or Paternal child