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 = [ε] or [æ]. 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 Igbo Language
According to Wikipedia.org, Igbo is a prominent language among the Igbo natives. These natives belong to the ethnic group that resides in Eastern Nigeria. This language is termed 'Igbo izugbe' and was officially adopted in 1972. The foundation of this language is based on various dialects. It includes Owerri (Isuama), Anambra (Awka) and Umuahia (Ohuhu). Many other languages are related to the Igbo language. The list includes Ika, Ukwuani, and Ogba. All these are also considered as the dialects of Igbo. There are around 42 million native speakers of Igbo. You will be surprised to see that the writing system is quite innovative. Most of it is written in Latin alphabets. It is the official language of Nigeria but is spoken by other people in the world too.