Although there is only one word difference between the two, their popularity is very different. Konbach is a well-known brand and a common brand. Not to mention that the quality of their products varies, some are good and some are bad, but their reputation is right. As for the brand Konbacher, I have basically never heard of it. It is obviously a small brand derived from trying to pass off Konbacher. There are many such small brands now, including many trademarks.