If you are just holding Bitcoin you can't be called a trader because you are just buying once in a long time. A trader always do a trade, it might daily, weekly or monthly. To determine a good trader he must be profitable, because you can't be it if you were not a disciplined person, didn't have patience, and don't a trading strategy that really works because of journaling and backtesting. If you buy Bitcoin and just hold it, the better word to call you is an investor.
There is a difference between trader and investor as trader will take quick decision and will buy and sell crypto coin immediately whereas in investment people often hold coins as longer as they can and achieve good sum from it by selling during Bull season. One who sell and buy asset on daily basis and on the other hand if someone buy a coin and sell it after years then first person is termed as trader while second one is investor.
I think if someone cannot make difference between these two are unfamiliar with crypto market and has no idea about forward step therefore first step is to learn about trading and investment. Trading is more risky than investment therefore it is suggested that don't loss your money if you are newbies but buy a coin and hold it longer.