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.
Good idea that hold your bitcoin for year or 2 year because bitcoin increasing its price too much faster day to day and there is maximum people are going to buying bitcoin in huge amount and then hold their bitcoin for higher price .