A person, that would choose, to build a long position in, (5%~15% of the portfolio), for e.g $FIS or $HOFT or few dozen other names, instead of going all in into ETH or BTC. That is a definition of a Investor for me.
It's semantics. Whether an investor, trader, gambler or speculator, the objective is to make a profit. You will probably do fine as any of them as long as you have some kind of risk control in place. (maybe we can rule out the gambler) I wonder how many traders have turned into investors because they didn't want to take a loss.