To observe certain events; undergo a certain feeling or process; or perform certain actions that may alter one or contribute to one's knowledge, opinions, or skills.
A collection of events and/or activities from which an individual or group may gather knowledge, opinions, and skills.
The knowledge thus gathered.
The effect upon the judgment or feelings produced by any event, whether witnessed or participated in; personal and direct impressions as contrasted with description or fancies; personal acquaintance; actual enjoyment or suffering.
An activity one has performed.