Many Koreans have vociferously denied my observation that similarities exists between Japanese and Korean. I suppose this is a reaction to the 1910-1945 Japanese annexation of Korea and Japan's attempt to wipe out Korean language and culture. --Ed Poor
My guess is that they are not familar with the Japanese language. The grammar is strikingly similar to Japanese, and that should be mentioned in the article. -- Wsxyz
When one says two languages are similar, the first thing comes to mind is that "can a Korean native understands what a Japanese person speak or write?" That was my first reaction. The two languages are NOT similar. However, if you look at the two languages in terms of their grammar structures or other linguistic aspects, you may get a different observation. If you have evidences that show the similarities, you should point them out. This claim is as wild as saying all European languages are similiar because they all use similar alphabets.
For example, Taiwanese and Fujianese are very similar dialects because a Taiwanese native can visit Fujian and guess 80% of what the locals say. Mandarin and Cantonese are not similar because one may be able to guess perhaps 10%. The Chinese dialects are all influenced by the same written language, yet, speakers cannot understand each others. Korean and Japanese are totally different in terms of writing and volcaburaries. It is not an easy task to show their similiarities.