A financial investment is an asset that you put money into with the hope that it will grow or appreciate into a larger sum of money.
The idea is that you can later sell it at a higher price or earn money on it while you own it. You may be looking to grow something over the next one year (saving up for a car) or over the next thirty years (saving for retirement). How you invest these dollars can be very different. How much time you have on your side is often a key thing to consider when making a financial investment. The more time you have, the more risk you can usually take.