GNS (GEOnet Names Server) tags

Dear fellow mappers,

I’ve noticed that that at the GNS import many tags with unclear meanings and dubious necessity wered imported.

May you please help me to clarify the meanings and start a discussion about potential removals?

https://wiki.openstreetmap.org/wiki/Talk:GEOnet_Names_Server#Useful_and_useless_tags

May you please move my topic to “Questions and Answers” that more people can read it?