The best way to explain it is to make a good statement rather than making a long and very technical definition that is hard for the reader to understand. So here is my explanation " All trading is an investment but not all investment is trading". It simply means that even trading itself is considered as investment. But investment has many forms aside from just trading, it could be investment in networking, loans, business and many more.
The difference between trading and investing is that trading is buying a particular token or coin i guess and selling that particular token when the price pumps up but when it is too low than before the trader will hold it while in investing you are buying a share in a particular signature campaign or ICO or you are depositing in a particular ICOs then when that particular campaign is successful then thats the time that your moneg will grow.