i think by long term investment it mean 1 to 2 years of duration. and from short term investment it means the investment for hours and days. some tie i do long term investment and on regular basis i do long term investment i personally like short time investment. i do a little earning from it but do it continuously.
but i think that long term investment is much more good than short term investment because i also get a big profit from long term investment and short term investment can not make a good profit so i recommend that long term investment is good .
if i have much of bitcoin, i will hold it for at least 1 into 2 years from the time of i am buying and i know it will make a big profit. but i am not yet have that much, i will only hold by half of my bitcoin and wait for a good price to sell it and not for 1 years from now on.