The parts of the name Greco which are very often used in Italy and Grechetto in grape variety names do not necessarily have to, but can indicate a Greek origin. In any case, the often very similar names lead to great confusion. Also in DOC/DOCG designations and grape variety statistics, it is often not free of doubt which variety(ies) are actually involved; respectively, this is partly also contradictory.
However, there is also a white grape variety Greco. Synonyms are Asprinia, Asprinio, Asprinio Bianco, Asprino, Greco del Vesuvio, Greco della Torre, Greco di Napoli, Greco di Tufo, Grieco, Grieco di Castelvenere and Uva Asprinia. However, some of these are listed in the VIVC catalogue as distinct varieties. Despite seemingly suggestive synonyms or morphological similarities, the Greco variety must not be confused with the varieties Greco Bianco, Guardavalle (Greco Bianco di Cirò), Maceratino, Malvasia Bianca di Piemonte (Greco), Malvasia di Lipari (Greco Bianco di Gerace), Rossetto (Greco Giallo), Trebbiano Gi allo (Greco di Velletri) or Welschriesling. According to DNA analysis, Greco is related to Aleatico.