I've just noticed that the English Wikipedia gives these spellings for "Zhajiangmian": Simplified Chinese 炸酱面 Traditional Chinese 醡醬麵 Whereas the English Wiktionary gives these: 炸酱面 ...
When wanting to learn the word for "ID card" I seem to find both "身份证" and "身分证". They both have the same pronunciation "shēnfèn zhèng". I don't think they differ by being traditional vs simplified? ...