No, sushi is a general term, and sushi roll is a kind of sushi.
Roughly classified sushi:
Rolls: cylindrical rice with vegetables or seafood inside and seaweed outside. Such as cucumber rolls.
hand-held sushi: the most common kind, a piece of naked rice covered with a piece of raw fish. The most classic is salmon sushi.
warship sushi: a piece of rice is covered with material and surrounded by seaweed. For example, tuna salad sushi and red crab sushi.
Hand-rolled sushi: it is shaped like an ice cream cone, with rice cone, seafood inside and seaweed outside.
In addition, there are some special things that are difficult to classify, such as fish raw rice, salmon flower love and so on.
The above information is purely personal experience, and it is purely hand-played ...