I am German. I am currently developing a system which acts like a data provider for company infos.
A company needs to be assigned to one or more "business sectors". I currently deal with companies doing the following:
- Repairing vehicles
- Towing services
- Handicraft businesses
- Motor vehicle experts
The above types I called "business sectors".
Below these can be "business fields", like:
- carpenter, etc
So my question is, how would a native speaker call these two levels? So far I've seen industrial sectors, branches, etc... I am confused ;)