Difference between threo/erythro and cis/trans nomenclature

According to what I have read, it seems that erythro isomers are defined in the same way as cis isomers and same holds true for threo and trans isomers. Is there any difference between these two set of terms or they mean one and the same thing?

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Difference between threo/erythro and cis/trans nomenclature

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