Common name for either of the parents brother is Uncle. But if more specification is required then Fathers brother will be termed as Paternal Uncle and Maternal Uncle will be Mothers brother.
Furthermore, what do we call fathers elder brother in English? Your fathers brother is your uncle. Your mothers brother is your uncle.
In respect to this, what is younger brothers wife called?
?? (bhayō) aunt. (elder brothers wife)
What do I call my fathers cousin?
Your fathers cousins child is your second cousin. And your fathers cousin is your first cousin once removed.