Determinism simply means the nature of things is deterministic, that's all. In other words, that is: given all initial conditions you can determine the exact resulting conditions.

Bell coined the term "Superdeterminism" to describe to others of theories that evade his own theorem - theories which are absolutely and completely deterministic. Theories that are only partially deterministic - don't hold up to his theorem. Hence he coined this term to highlight the difference (to those that fail to understand), which again is absolutely/completely vs partially deterministic theories.

As so there's no real difference here. If you understand determinism, then you know that a "partially" deterministic theory is not actually deterministic...