Is the traditional bow also called a straight bow?

No. Traditional bows can be divided into straight bows and recurve bow. A straight bow is a bow that does not bend before winding and does not face the shooter. After winding, the end of its bow arm bends towards the shooter. Recurve bow is a kind of bow that looks different from ordinary longbow from the side: one end of recurve bow's bow arm, instead of bowstring, bends outward.