The Bulgarians are, firstly, not really Bulgarian, they are just called Bulgarian. The Bulgars are Bulgarian. The Bulgarians are arguably Bolgars, but should by no means be confused with the Bolgarians. As for the Bolgarians, they are mostly the same as the Bulgars, except that they have noticeably prettier hairstyles. (However, recent research based on 7th century Armenian geographical work Asxbcnhjhwqklhrk suggests that the Boringland, Bulhi, the Burgers, the bacterians and most other things starting with the letter B are also Bulgarian.)