Datum and Marginalia

Datum noun - A single piece of information.

Marginalia and datum are semantically related in note topic. In some cases you can use "Marginalia" instead a noun "Datum", when it comes to topics like written communication.

Marginalia noun - Notes written in the margin.

Datum and marginalia are semantically related in note topic. Sometimes you can use "Datum" instead a noun "Marginalia", if it concerns topics such as written communication.