Complex sentence: Where the substrate map applies to an entire wafer, the term'wafer map' would be used,'substrate map' is a more general term, applied to mapping in other areas of the semiconductors process: frames, trays and strips.
Split into simpler sentences: Where the substrate map applies to an entire wafer, the term'wafer map' would be used. 'Substrate map' is a general term, applied to mapping in other areas of the semiconductors process: frames, trays and strips.