English Science Economics modeling

Is ‘forecast’ appropriate here, or should ‘predict’ or ‘project’ or prognose’ be used? It is a text describin a macro-economic model that predicts GDP growth etc.

"First, the theoretical assumptions the model is based on as well as its scale could affect both the overall quality and the forecasting capacities of that model."

Throughout the document, different forms of forecast are used over and over. Are there rules about using the term forcast or prediction when applied to models or analytical opinions?

Three more example sentences:

The price of crude oil is predicted on the basis of world market forecasts and intergovernmental agreement between Belarus and Russia on terms of oil supply.

In order to forecast oil price for Belarus over a period of 2010-2011, the duty for Belarus has been calculated on the basis of information available for 2009.

The employment forcast is produced by assuming an unchanged ‘full employment’ policy.