Caj eng yaxshi nom ma'nolari: Omadli, Vakolatli, Faol, Ijodiy, Quvnoq. Qabul qiling Caj ismining ma'nosi.
Caj ismining kelib chiqishi. Variant of Kai. Qabul qiling Caj ismining kelib chiqishi.
Boshqa mamlakatlar va tillarda, Caj uchun alohida ismlar: Caio, Caius, Cees, Corné, Cornélio, Corneille, Cornel, Cornelio, Cornelis, Corneliu, Cornelius, Gaios, Gaioz, Gaius, Gearóid, Gérard, Geert, Gellért, Gerard, Gerardo, Gerd, Gerhard, Gerhardt, Gerrard, Gerrit, Gert, Gherardo, Jerrard, Jorrit, Jurryt, Kai, Kajus, Kay, Kees, Kerneels, Klaas, Klaes, Klaos, Kornél, Kornel, Korneli, Miklavž, Miklós, Mikołaj, Mikoláš, Mikula, Mikuláš, Mykola, Neacel, Neculai, Niccolò, Nichol, Nicholas, Nick, Nickolas, Nickolaus, Nico, Nicol, Nicola, Nicolás, Nicolaas, Nicolae, Nicolao, Nicolaos, Nicolas, Nicolau, Nicolaus, Nicolò, Niek, Nigul, Niklas, Niklaus, Nikola, Nikolaas, Nikolai, Nikolaj, Nikolajs, Nikolao, Nikolaos, Nikolas, Nikolaus, Nikolay, Nikoloz, Nikora, Nioclás, Sjra. Qabul qiling Caj boshqa tillarda.
Alpern ismiga ega bo'lgan eng keng tarqalgan ismlar: Dorthy, Eric, Lucrecia, Nick, Kate, Éric, Èric. Qabul qiling Alpern bilan ketadigan ismlar.