Comment by ghaff

I can sue you for more or less anything. And, especially if I'm a big company, I can make you waste a lot of time and money (even if you're also a big company). That's why, as someone who has been involved in a number of product naming decisions, my experience is that lawyers are very conservative in terms of what names they let you use even if, on paper, it seems like you have a good argument that your somewhat overlapping name is completely unrelated.