+**Annotation** involves adding explanatory notes or critical commentary to text or data. It enriches understanding by providing additional context, often linking specific elements to broader concepts. This practice is fundamental in fields like [Linguistics](/wiki/Linguistics) and [Data Science](/wiki/Data_Science) for tasks such as training [Machine Learning](/wiki/Machine_Learning) models.
+## See also
+- [Metadata](/wiki/Metadata)
+- [Labeling](/wiki/Labeling)
+- [Corpus](/wiki/Corpus)
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