difference between пасть and упасть

2018-04-01 15:12:03

I found a source saying that the partner of падать is both упасть and пасть, so I was wondering what the difference between these two words is. So far I could only find a post explaining the difference between падать and упасть (the first one is perfective and the second one is imperfective) but I couldn't find anything on the difference between пасть and упасть (though упасть seems to be more commonly used).