The following attempts to distinguish by age and professional fields:
Participation in the community takes on different rhythms depending on one’s age and profession.
Sometimes it can be seen as a hobby, while at other times it can be regarded as an extension of one’s professional work. https://docs.google.com/presentation/d/1qNwiMoxqKorAFm-Lgkk0guTXDCs3ePRGMQh9XWaSwZM/edit