For example, G.L. Lewis's grammar of Turkish counts the -iyor form as a presenttense; Robert Underhill's as a progressivetense; and Jacklin Kornfilt's as both a continuous (nonhabitual imperfective) and a progressive (continuous non-stative) aspect.
In general, the progressive aspect expresses the dynamic quality of actions that are in progress while the continuous aspect expresses the state of the subject that is continuing the action.
Some linguists consider the progressive aspect to be a kind of continuous aspect, one that merely emphasizes the action already conveyed by the continuous.