Though you might be used to saying "slaw" as shorthand for coleslaw, not all slaw is coleslaw. Coleslaw always features cabbage, while slaw is a much broader term.
Early Dutch settlers in New York brought a dish called "koolsla," with "kool" meaning cabbage and "sla" meaning salad. "Coleslaw," therefore, always refers to a cabbage slaw.
Meanwhile, "slaw" refers to any kind of crunchy, raw vegetable salad coated in a creamy or tangy dressing. Unlike coleslaw, slaw is associated with many different global cuisines.
A Vietnamese-style slaw can include carrots, cucumber, cilantro, and daikon radish with fish sauce, while a French-inspired slaw may use apples, fennel, tarragon, and endive.