Family
A family can be a community in many ways. Going of the scientific term I would say, a family could start off with a mother father two sons and a daughter. And if all children got married and stayed close to their parents. Then the married children, had children that got married and stayed close to home, you would have a community of the same family.
Both. The children of your father's siblings are your first cousins as are the children of your mother's siblings.
That term is "nuclear family." It refers to a family unit consisting of parents (a father and mother) and their children living together in the same household.
William's father married a woman who was much younger than himself such that William's mother's father was younger than William's father. Common term is cradle robbing.
Roman children called their parents Pater (father) or Mater (mother) There was also the term tata which meant daddy, and the universally standard mama.
To my knowledge, the term "illegitimate" isn't used on birth certificates any more.
King Oedipus in the Oedipus trilogy married his mother and killed his father. The Oedipus trilogy was written by Sophocles. Later Freud would coin the term Oedipus complex when boys would love their mothers a little too much.
Maternal is the medical term meaning from the mother, while paternal means from the father
The German term for "stepdad" is "Stiefvater." It is used to refer to a man who is married to one's mother but is not one's biological father. The word combines "Stief," meaning "step," with "Vater," meaning "father."
Auntie is a loving term used by some instead of aunt. Aunties are aunts to their nieces and nephews. An aunt is the sister of a child's mother or father.
Nuclear family is father mother and children.Extended family is father mother children plus some other relatives like grandparent(s) or aunt or uncle
Grandmother. That is the proper term, as the others are abbreviations