ice hockey is a rink and field hockey is just a field
Length - 55 metres Width - 22.9 metres
Field hockey is a field sport, but both indoor and ice hockey are rink sports.
Well, by field hockey I think you mean hockey games that are done on the ground like field hockey, street hockey,ect. It is called ice hockey. *Field hockey and ice hockey are completely different rulebases. As the first answer pretty much describes, it is simply called "field hockey on ice", like it is called "field hockey on grass", "on turf", "on concrete", etc.
Turf hockey is field hockey.
It means nothing in field hockey.
No, field hockey was invented in Britain.
There is no offside in field hockey.