| noun | the act of adding notes |
| verb | add explanatory notes to or supply with critical comments “The scholar annotated the early edition of a famous novel” |
| verb | provide interlinear explanations for words or phrases “He annotated on what his teacher had written” |
| annotate | verb | add explanatory notes to or supply with critical comments |
| note | noun | a comment or instruction (usually added) |
| annotation | noun | a comment or instruction (usually added) |
| annotator | noun | a commentator who writes notes to a text |
| footnote | noun | a printed note placed below the text on a printed page |
| gloss | noun | an alphabetical list of technical terms in some specialized field of knowledge; usually published as an appendix to a text on that field |
| comment | noun | a written explanation or criticism or illustration that is added to a book or other textual material |