If your cousin is a son/daughter of your Brother, Uncle(from dad's side) ...etc then you have to say 'Bhatija' and If your cousin is a son/daughter of your sister, Aunt (from mom's side) then you have to say 'Bhagin'
Sun in Assamese language is called "সূৰ্য" (pronounced as "surya").
Assamese culture is a very beautiful culture.This culture prevails in Assam,a small state of India situated in the North-East.The language in this state is also called Assamese and the people are so called as well.Plz find more on Google.
The English language does not use the phrase "cousin brother." The brother of your cousin is also your cousin.
assamese movies called Bolsobi
Deuta
bengali
hindi
Kaliram Medhi has written the book "Bhraman Mritunjay," which is a collection of Assamese short stories.
Tumi bar dhunia.
Surjya
sankar
The English language has no special term for the siblings of your cousin's spouse, other than calling them "my cousin's brother-in-law" or "my cousin's sister-in-law."