einpacken or packen
einpacken is a separable verb that means to pack but without the ein what can that mean or is it always einpacken like aufstehen means to get up but stehen means to stand it has a different meaning without the auf or are there some separable verbs that always have to remain with a prefix
etwas in den Koffer einpacken is to put something (often something specific) into the suitcase. But to pack the suitcase is den Koffer packen. For example ich muss noch die Socken einpacken - I still have to pack the socks. packen refers to the Koffer but einpacken is what you do with the things that you put into the suitcase.
but einpacken is what you do with the things that you put into the suitcase.
Since one can also say "ein Geschenk einpacken" (what means "to wrap a gift/present") I would say "einpacken" is what you do with things that you put into something, if that's a suitcase or for example gift wrapper (Geschenkverpackung) or something else entirely.
packen means to grab someone. But also to pack. Ich packe den Mann am Arm; ich packe den Koffer