Is there an equivalent to the word sibling for a parent-child relationship?

Does a parent-child relationship have an equivalent to the word "sibling"?

For example:

Brother to brother: "We are brothers. We are siblings"

Son to father: "We are ________."

I do not know of a word in English to express parent-child relations like that other than in terms of one to the other (i.e. "you are my father; I am your son"). The closet I can think of is using the family name ("we are Lannisters").


Solution 1:

Kin or family. There's nothing specific to the case.