{bam} is defined as "face, have the prospect of having to deal with".

{DIgh}, on the other hand, is defined as "undertake, deal with".

I can't understand what's the actual difference between them. 

Do we use {bam} when we will face something unpleasant in the future, and {DIgh} when we deal with something in the here-and-now, regardless if it is pleasant or not ?

~ mayqel qunen'oS