About Korean Language
According to Wikipedia.org, The Korean language is the official language of North and South Korea. Around 48 million speakers live in South Korea while the other 24 million reside in North Korea. There are around 2 million speakers of the Korean language in China while 1 million are in the United States. The dialect of Korean is different in both North and South Korea. Even the spellings, alphabets, and vocabulary choices are different. The writing system features vernacular script and is now known as Hangul. There are two different types of vowels that include y or w. Some front vowels are written as e = [e], and ae = [ฮต] or [รฆ]. However, some of them are originally diphthongs. The Korean language is deeply influenced by Chinese but even then, it is completely different from it.
About Sundanese Language
According to Wikipedia.org, Sundanese is pronounced as basa sสnda. It is a Malayo-Polynesian language that is spoken by Sundanese people. It has got 40 million native speakers in the western part of Java. They represent about 15% of the total population. You will be surprised to know that Sundanese has a lot of dialects. It includes western, northern, southern, mid-east, and northeast dialects. The Priangan dialect covers the largest areas of the Sundanese language. It is also taught in elementary schools and other forms of education. This language is written in different writing systems if we look at history. The old Sundanese script is also full of this writing script. If we talk about the Pegon script it is still commonly used among other options. There are around 18 consonants in Sundanese phonology.