Is there are difference between 'self' & 'soul' in Buddhism?

A core teaching of Buddhism is 'anatta' or 'not-self'. Does the word 'atta' refer to both 'self' & 'soul' or can these two ideas (self & soul) be different in Buddhism to give them different meanings? In other words, are the ideas 'self' & 'soul' (be they used in Buddhism or non-Buddhism) necessarily synonymous in Buddhism?