The task/process of adding annotations (i.e. labels that act as notes, comments, explanations, etc.) to an item
Annotation
Labelling
Tagging
Labeling
A note by way of explanation or comment added to a text or diagram [OED, https://en.oxforddictionaries.com/definition/annotation]. Text or corpus annotation refers to the interpretative linguistic information grounded in a knowledge resource that is added manually or automatically to a text or corpus respectively.
Anonymisation
Anonymization
Model function
Model Function Taxonomy
Multimedia annotation
Speech annotation
Text annotation
Named individual