Word sense disambiguation

A natural language processing task that determines which meaning of a word is being used in a given context when the word has multiple possible meanings (polysemy). In accessibility applications, particularly automatic text simplification, WSD is essential for lexical simplification—when replacing a complex word with a simpler synonym, the system must choose a replacement that matches the original word's meaning in context. For example, replacing "bank" requires knowing whether the text refers to a financial institution or a river's edge. Poor WSD can introduce errors that change meaning, undermining the accessibility goal of making text clearer.