What are two other names for a waterfall chart?

The correct answer, which identifies two other names for a waterfall chart, is that it is commonly referred to as "cascade" or "flow" charts. A waterfall chart is specifically designed to visualize the cumulative effect of sequentially introduced positive or negative values, often used to show how an initial value is affected by a series of intermediate values.

The term "cascade" effectively captures the notion of values cascading from one to another, leading to the final outcome. Similarly, "flow" charts emphasize the progressive flow of data points, making it clear how the values shift over time or through different categories. These terms are relevant in both analytical and business contexts, where understanding the transitions between values is crucial.

The other terms listed do not accurately represent the commonly accepted terminology related to waterfall charts, and therefore, they are not suitable substitutes in this context.