what are they?

 Paraphrasing isn't typically categorized into distinct types like "literal" and "substantive." Instead, paraphrasing techniques are used to create variations in how the original text is expressed while maintaining its meaning. These techniques include synonym replacement, sentence restructuring, changing parts of speech, condensation, expansion, combination, and personalization, as mentioned earlier. These methods help in producing paraphrased content that is both unique and faithful to the original intent.