Saving your money isnt a form of investment because the interest earned is pretty much low, even if you compound them over for a year period then you will get the interest rate will be lower than the yearly inflation rate .
That means you are losing money each time you save them up, however atleast you are exposing your funds to a smaller risk . On the other hand there is always a safe deposits which could be consider as a form of investment, kinda combination of both saving and investing