Lol, this is a important topic though, it seems wickedly funny! It's a good thing you thought of this and had to make emphasis on it because, a lot of persons might not know the difference between Bitcoin and Bitcoin cash. They almost assume in one instant based on any that they are approached first with to be Bitcoin. Having no prior knowledge of what bitcoin is. But there is really a difference, one is more valuable than the other. Should you @newbies & Beginners have any prior knowledge of bitcoin with regards to it's value or price, it could be a determinant for which is which.
Bitcoin is top coin with a price fluctuation around $18k currently so, when buy a coin, check its current price and from that, the relativism could be determined.