In what context is the term flush generally used?

The term "flush" is often used in contexts where being "in the same plane" is relevant, particularly in architecture, carpentry, or design. When surfaces or elements are described as flush, it indicates that they are level with each other, creating a smooth and even appearance without any gaps or protrusions. This usage emphasizes alignment and balance, which is essential in these fields for both functionality and aesthetics.

While the other options may contain some contextual relevance for different meanings of "flush," they do not align with the most commonly accepted or precise definition used in technical or practical settings. For instance, describing someone as being overly excited or wealthy captures other definitions of "flush," but those uses are more figurative and less precise compared to the straightforward and concrete meaning related to alignment.