Introduction
For some people, including native English speakers, the consonant sounds [dʒ] “dg”, [z] and [ʒ] “zh”are not similar at all! But for those who do not have these consonant sounds in their first languages, like Koreans and some others, it can be difficult to distinguish [dʒ] “dg”, [z] and [ʒ] “zh”.
It’s important to practice the difference, though, because mixing up these sounds could confuse the listener and interfere with communication.