It seems there is a particularly high number of so-called false friends between Irish and Scottish Gaelic, maybe due to their proximity. So if you are a speaker of one and learning the other like myself this list will be helpful to you.
People often ask me if it is difficult to learn the “sister” language: It’s quite easy to learn a few words to make yourself understood (A2-B1 level). But if you want to take it to a professional level it’s probably just as difficult as it was to learn the first of the two.