This can vary between hotels, but generally board basis would be as follows:
Room Only – The price covers just your use of the room. Usually means there will be no facilities for food preparation.
Self Catering – Again, the price is for the room only, but with self catering it usually means there will be facilities within the room for food preparation.
Bed & Breakfast – The price includes Breakfast (either continental or full English, dependent on the accommodation).
Half Board – The price includes breakfast and evening meal.
Full Board – The price includes breakfast, lunch and evening meal.
All Inclusive – The price will generally include all meals, snacks and drinks produced by the hotel (drinks will usually be restricted to locally produced items – please refer to the specific hotel details for the full all-inclusive terms applicable to your chosen accommodation).