Comparison of Japanese vs Vietnamese language history gives us differences between origin of Japanese and Vietnamese language. History of Japanese language states that this language originated in 1185 whereas history of Vietnamese language states that this language originated in c. 1440. Family of the language also forms a part of history of that language. More on language families of these languages can be found out on Japanese and Vietnamese Language History.
People around the world use different languages to interact with each other. Even if we cannot communicate fluently in any language, it will always be beneficial to know about some of the common greetings or phrases from that language. This is where Japanese and Vietnamese greetings helps you to understand basic phrases in Japanese and Vietnamese language. Japanese word for "Hello" is こんにちは (Kon'nichiwa) or Vietnamese word for "Thank You" is Cam on. Find more of such common Japanese Greetings and Vietnamese Greetings. These greetings will help you to be more confident when conversing with natives that speak these languages.
The Japanese vs Vietnamese difficulty level basically depends on the number of Japanese Alphabets and Vietnamese Alphabets. Also the number of vowels and consonants in the language plays an important role in deciding the difficulty level of that language. The important points to be considered when we compare Japanese and Vietnamese are the origin, speaking countries, language family, different greetings, speaking population of these languages. Want to know in Japanese and Vietnamese, which language is harder to learn? Time required to learn Japanese is 88 weeks while to learn Vietnamese time required is 44 weeks.