Comparison of Vietnamese vs Thai language history gives us differences between origin of Vietnamese and Thai language. History of Vietnamese language states that this language originated in c. 1440 whereas history of Thai language states that this language originated in 1283 CE. 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 Vietnamese and Thai 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 Vietnamese and Thai greetings helps you to understand basic phrases in Vietnamese and Thai language. Vietnamese word for "Hello" is Xin chào or Thai word for "Thank You" is ขอบคุณ (K̄hxbkhuṇ). Find more of such common Vietnamese Greetings and Thai Greetings. These greetings will help you to be more confident when conversing with natives that speak these languages.
The Vietnamese vs Thai difficulty level basically depends on the number of Vietnamese Alphabets and Thai 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 Vietnamese and Thai are the origin, speaking countries, language family, different greetings, speaking population of these languages. Want to know in Vietnamese and Thai, which language is harder to learn? Time required to learn Vietnamese is 44 weeks while to learn Thai time required is 44 weeks.