Our (overqualified) literature teacher in High School taught us this and many other words. On top of my head, I can think of- Bhratara (Sanskrit) <--> Brother

Our (overqualified) literature teacher in High School taught us this and many other words. On top of my head, I can think of- Bhratara (Sanskrit) <--> Brother (English) <--> Bruder (German) Pitara (S) <--> Father (E) <--> Vater (G) Matara (S) <--> Mother (E) <--> Mutter (G) Languages in the Indo-European language-family are wildly related, and when learning a new language from this family, if your first language is already in it, then, you often discover links to and from words in languages that you are learning or known or semi-known. I don't know which one is the root, but in these situations, it is better to think in terms of common ancestor/s rather than upstream or downstream.